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CVE-2026-25210

6.9 MEDIUM

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow...

Published: 2026-01-30 · Last updated: 2026-06-02

Severity and scoring

CVSS
6.9 MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
CWE-190

Affected products

VendorProduct
libexpat_projectlibexpat

Description

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-50219 — libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_Pa... (4.9 MEDIUM)
  • CVE-2026-24515 — In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data (2.9 LOW)
  • CVE-2025-66382 — In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time (2.9 LOW)

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  • CVE-2026-47925 — Acrobat Reader versions 24.001.30365, 26.001.21651 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could... (5.5 MEDIUM)
  • CVE-2023-29146 — The utility functions used by Malwarebytes EDR 1.0.11 on Linux for calculating a cryptographic hash of data bytes truncate the hashed dat... (8.2 HIGH)
  • CVE-2026-47291 — Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network (9.8 CRITICAL)