Catalogo CVE

CVE-2026-76875

Gravità: Medium · CVSS 6.3CVSS: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: Sep 29, 2026, 1:17:52 PM UTC
Updated: Sep 29, 2026, 1:17:52 PM UTC
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]Interessata
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · amd64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · arm64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-dev]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-doc]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-lib]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · amd64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · arm64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-lib-testsuite]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-tk]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · amd64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · arm64 · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
[pypy3-venv]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- 7.3.11+dfsg-2+deb12u3 · all · bookworm
  Interessata
  nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12

[Debian 13 (Trixie)]

[pypy3]Interessata
Dettagli (2)
- 7.3.19+dfsg-2 · amd64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · arm64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-dev]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-doc]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-lib]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · amd64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · arm64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-lib-testsuite]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-tk]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · amd64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · arm64 · trixie
  Interessata
  nvd · pypy3 · debian · 13
[pypy3-venv]Interessata
Pacchetto sorgente: [pypy3]
Dettagli (2)
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13
- 7.3.19+dfsg-2 · all · trixie
  Interessata
  nvd · pypy3 · debian · 13

Osservato: Oct 23, 2026, 7:47:21 PM UTC

Riferimenti

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]