
CVE-Katalog
CVE-2026-76875
PyPy before versions 3.11.16 and 3.12.14 contains a use-after-free vulnerability in the pyexpat module's ExternalEntityParserCreate function that allows attackers to corrupt memory by supplying a craf
- Schweregrad
- Medium · CVSS 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 22, 2026
PyPy before versions 3.11.16 and 3.12.14 contains a use-after-free vulnerability in the pyexpat module's ExternalEntityParserCreate function that allows attackers to corrupt memory by supplying a crafted XML document to applications that create external-entity sub-parsers without retaining a reference to the parent parser. The child parser retains a raw C back-pointer to the parent parser struct while PyPy's tracing garbage collector can free the parent's C struct, causing bundled libexpat to dereference the freed pointer on every parsed token, producing memory corruption.
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 |
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 | Not reported |
| Debian | pypy3 | source | forky | 8.0.0+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | pypy3 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pypy3 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
Notes
[trixie] pypy3: Minor issue [bookworm] pypy3: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [pypy3]Betroffen
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-dev]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-doc]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-lib]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-lib-testsuite]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-tk]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-venv]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[Debian 13 (Trixie)]
- [pypy3]Betroffen
Details (2)
7.3.19+dfsg-2· amd64 · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-dev]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-doc]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-lib]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· amd64 · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-lib-testsuite]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-tk]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· amd64 · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieBetroffen
nvd · pypy3 · debian · 13
- [pypy3-venv]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieBetroffen
nvd · pypy3 · debian · 13
Beobachtet: