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CVE-2026-102633VulnerabilityPublished Updated

SUSE expat · Security update for expat

Affects SUSE expatSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited : upgrade the Debian expat package to 2.8.5 soon.

Data as of 31 Oct 2026, 20:20 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.8.5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

Upgrade the Debian expat package to 2.8.5.

Affected software

ProductAffectedFixed in
Debianexpatpkg:deb/expatOther threatsAffected
  • <2.8.5
Fixed in
  • 2.8.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to expat version 2.8.5, which contains fixes for all described vulnerabilities and related bugs. No other mitigation is indicated or required as the update resolves the issues.

Description

This security update for the expat XML parser addresses multiple vulnerabilities including an out-of-bounds read in XML_ParseBuffer(), improper validation of UTF-16 surrogate pairs, and a denial of service caused by an integer overflow in expat_realloc. The update also includes bug fixes related to memory leaks and alignment issues. These vulnerabilities have been fixed in expat version 2.8.5.

References

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