OSV-2025-465 Heap-buffer-overflow in xmlParsePubidLiteral
A heap-buffer-overflow in the XML parser allows attackers to cause crashes or potentially execute code via malicious input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2025-465?
OSV-2025-465 is a memory corruption vulnerability in xmlsec, published on 15 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=424613315
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
xmlParsePubidLiteral
xmlParseExternalID
xmlParseNotationDecl
Which versions are affected by OSV-2025-465?
1 open source package ship an affected version, including xmlsec.
| Package | Affected | Fixed in |
|---|---|---|
xmlsec OSS-Fuzz | All versions | None |
How do I fix OSV-2025-465?
No fix has been published for OSV-2025-465 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2025-465 being exploited?
There is no known exploitation of OSV-2025-465 in the wild and no public exploit code.