libexpat 2.10.0 fixes four vulnerabilities
libexpat 2.10.0 releases fixes for CVE-2026-113351, CVE-2026-115506, CVE-2026-117610 and CVE-2026-118370.
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Vulnerability1 · 1 read
CVE-2026-113351
Denial of service in libexpat 2.7.2–2.9.0 after parser reset
- CVSS 4.0
- 8.2 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
libexpat 2.7.2 through 2.9.0 mishandles XML_ParserReset: it zeroes the direct byte count but does not offset tracked heap allocations. An attacker who can send a large XML document to a parser that is later reset and reused can make subsequent documents fail with XML_ERROR_NO_MEMORY until that parser is recreated. No privileges or user interaction are required. Software that embeds those libexpat versions and reuses a reset parser is affected.
What to do: No fixed version is stated. Apply the libexpat update for CVE-2026-113351 when one is released; affected releases are 2.7.2 through 2.9.0.
| Product | Affected |
|---|---|
| libexpat | 2.7.2 through 2.9.0 |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
libexpat 2.7.2 through 2.9.0 contains a denial of service vulnerability because XML_ParserReset zeroes the direct byte count but never offsets tracked heap allocations. Attackers can submit a large XML document so later documents on the same reset parser fail with XML_ERROR_NO_MEMORY until it is recreated.
- Vendors
- libexpat project
- Products
- libexpat
- Weakness
- CWE-909
- Vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
In the news
2 storiesExpat 2.10.0 released with four security fixes
Fixes DoS vulnerabilities including billion laughs attacks and integer overflow issues
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