Catalogo CVE
CVE-2025-69534
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Ma
- Gravità
- High · CVSS 8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.60% · Oct 22, 2026
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pypy3 | sid | 8.0.1+dfsg-1 | fixed |
| Debian | pypy3 | forky | 8.0.1+dfsg-1 | fixed |
| Debian | pypy3 | trixie | 7.3.19+dfsg-2 | vulnerable |
| Debian | pypy3 | bookworm | 7.3.11+dfsg-2+deb12u3 | vulnerable |
| Debian | python3.11 | bookworm | 3.11.2-6+deb12u8 | vulnerable |
| Debian | python3.11 | bookworm-security | 3.11.2-6+deb12u9 | fixed |
| PyPI | markdown | Not reported | 3.8.1 | fixed |
| Cpe | pypy3 | Not reported | Not reported | vulnerable |
| Cpe | python3.11 | Not reported | Not reported | vulnerable |
| Cpe | python3.12 | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | idle-python3.12 | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | libpython3.12-dev | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | libpython3.12-minimal | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | libpython3.12-stdlib | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | libpython3.12-testsuite | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | libpython3.12t64 | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-dev | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-doc | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-examples | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-full | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-minimal | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-nopie | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| Cpe | python3.12-venv | Not reported | 3.12.3-1ubuntu0.15 | fixed |
| PyPI | markdown | Not reported | 3.8.1 | fixed |
| PyPI | markdown | Not reported | Not reported | unknown |
| Cpe | markdown | Not reported | Not reported | unknown |
| Opensuse | python-Markdown | leap 15.6 | 3.5.2-150600.3.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pypy3 | source | sid | 8.0.0+dfsg-1 | not yet assigned | Not reported | [1141532] |
| Debian | pypy3 | source | forky | 8.0.0+dfsg-1 | not yet assigned | Not reported | [1141532] |
| Debian | pypy3 | source | trixie | (unfixed) | not yet assigned | Not reported | [1141532] |
| Debian | pypy3 | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141532] |
| Debian | python3.11 | source | bookworm | 3.11.2-6+deb12u9 | not yet assigned | Not reported | Not reported |
| PyPI | markdown | PyPI | Not reported | 3.8.1 | Not reported | GHSA-5WMX-573V-2QWQ | Not reported |
| Cpe | python3.12 | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | idle-python3.12 | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | libpython3.12-dev | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | libpython3.12-minimal | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | libpython3.12-stdlib | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | libpython3.12-testsuite | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | libpython3.12t64 | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-dev | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-doc | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-examples | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-full | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-minimal | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-nopie | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| Cpe | python3.12-venv | cpe | Not reported | 3.12.3-1ubuntu0.15 | Not reported | Not reported | Not reported |
| PyPI | markdown | PyPI | Not reported | 3.8.1 | Not reported | Not reported | Not reported |
| Opensuse | python-Markdown | rpm | leap 15.6 | 3.5.2-150600.3.3.1 | Not reported | SUSE-SU-2026:0846-1 | Not reported |
Notes
[trixie] pypy3: Minor issue [bookworm] pypy3: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [idle-python3.11]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11-dbg]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11-dev]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11-minimal]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11-stdlib]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [libpython3.11-testsuite]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [pypy3]Interessata
Dettagli (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-dev]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-doc]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-lib]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-lib-testsuite]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-tk]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-venv]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormInteressata
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [python3.11]Interessata
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [python3.11-dbg]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [python3.11-dev]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [python3.11-doc]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [python3.11-examples]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· all · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· all · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- [python3.11-full]Interessata
Pacchetto sorgente: [python3.11]
Dettagli (4)
3.11.2-6+deb12u8· amd64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u8· arm64 · bookwormInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· amd64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
3.11.2-6+deb12u3· arm64 · bookworm-securityInteressata · Corretta:
3.11.2-6+deb12u9nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
Osservato:
Riferimenti
- [https://access.redhat.com/errata/RHSA-2026:14835]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_0846-1.json]
- [https://github.com/advisories/GHSA-5wmx-573v-2qwq]
- [https://nvd.nist.gov/vuln/detail/CVE-2025-69534]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-69534]
- [https://osv.dev/vulnerability/GHSA-5wmx-573v-2qwq]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0846-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-69534]
- [https://ubuntu.com/security/notices/USN-8509-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1610.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]