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CVE-2025-11021 is an out-of-bounds read vulnerability in the cookie expiration-date handling logic of the libsoup HTTP library. Processing a Set-Cookie header with a specially crafted expiration date can cause libsoup to read beyond an allocated memory buffer. The flaw affects applications using vulnerable libsoup versions to process attacker-controlled HTTP responses and may expose data held in the affected process's memory.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Important-severity vulnerability referenced by the AlmaLinux local security-check plugin. The supplied CVSS v2 vector indicates network-accessible exploitation with low attack complexity and impact to confidentiality.
A vulnerability tracked as CVE-2025-11021 affecting the libsoup3 packages in ZTE NewStart CGSL Main 7.
libsoup cookie-expiration-date parsing flaw that causes an out-of-bounds memory read and may disclose process memory.
A high-severity out-of-bounds read vulnerability in libsoup's cookie expiration date parsing logic that can disclose sensitive process memory when a vulnerable client processes a malicious HTTP response containing a crafted Set-Cookie header.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.