CVE-2023-39615: Libxml2 version 2.11.0 contains an out-of-bounds read
Affects libxml2Source CVE Database V5
Not known to be exploited.
Data as of 26 Oct 2026, 10:12 UTC
Rated Medium by the CNA (mitre) · No CVSS score from NVD or the CNA
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 64% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 29 Aug 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Debiandebian/libxml2pkg:deb/debian/libxml2Other threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should avoid using libxml2 version 2.11.0 or the legacy SAX1 interface with custom callbacks until a fix is available.
Description
Libxml2 version 2.11.0 contains an out-of-bounds read vulnerability in the xmlSAX2StartElement() function that can lead to a denial of service (DoS) when processing crafted XML files. The vendor notes that the product does not support the legacy SAX1 interface with custom callbacks, and crashes can occur even without crafted input.