Home/CVE/libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
CVE

CVE-2026-32777

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

MEDIUM · CVSS 4 EPSS 6e-05
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
▤

Affected Products & Versions

1
libexpat project libexpat< 2.7.5
⚠

Public Exploits & PoCs

1
pocgithub.com · 1161github.com
▣

Scoring & Timeline

4
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Mar 2026 · 02:19 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

19
suse-csafSUSE-SU-2026:1956-1
suse-csafSUSE-SU-2026:1870-1
suse-csafSUSE-SU-2026:1817-1
suse-csafSUSE-SU-2026:1742-1
suse-csafopenSUSE-SU-2026:20674-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/libexpat/libexpat/pull/1159Issue TrackingPatch
https://github.com/libexpat/libexpat/pull/1162Issue TrackingPatch
https://issues.oss-fuzz.com/issues/486993411Permissions Required
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