CVE-2026-102560
Last modified
CVE-2026-102560 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Libsoup | < 3.7.3 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
References
- https://access.redhat.com/errata/RHSA-2026:83384Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:83618Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-102560Mitigation, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2543296Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-102560?
How severe is CVE-2026-102560?
How do I fix CVE-2026-102560?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-102555A flaw was found in libsoup. The soup_uri_decode_data_uri() …8.2
- CVE-2026-102556A flaw was found in libsoup. When handling an incoming WebSo…8.6
- CVE-2026-102557A flaw was found in libsoup. When reassembling fragmented We…8.6
- CVE-2026-102558A flaw was found in libsoup. When max-incoming-payload-size …8.6
- CVE-2026-102559A flaw was found in libsoup. When constructing a masked WebS…8.6
- CVE-2026-10256A vulnerability was identified in itsourcecode Content Manag…6.3
- CVE-2026-102562The AcyMailing plugin for WordPress is vulnerable to Stored …7.2
- CVE-2026-102564The The Dynific Addons for Elementor (formerly Anywhere Elem…6.5
- CVE-2026-102565The BA Book Everything plugin for WordPress is vulnerable to…7.2
- CVE-2026-102566CTranslate2 before 4.8.1 contains a heap-based buffer overfl…7.8
- CVE-2026-102567CTranslate2 before 4.8.1 contains an out-of-bounds heap read…6.1
- CVE-2026-102568Pardus Parental Control before 0.7.0 contains an incorrect a…5.5
Are you affected by CVE-2026-102560?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST