CVE record · CVE-2026-102560

Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth

CVSS 8.6 HighEPSS 0.0052 · 44th percentile

Published by the CVE Program (CNA: redhat) at 29 Sept 2026, 17:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10 Package name: libsoup3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.6.5-3.el10_2.20 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support Package name: libsoup3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.6.5-3.el10_0.19 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.72.0-16.el9_8.8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.72.0-8.el9_2.18 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.72.0-8.el9_4.17 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.72.0-10.el9_6.14 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown
Red Hat	Red Hat Enterprise Linux 7 Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: libsoup https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2026-102560
CNA: redhat
Weakness (CWE): CWE-125
Tags: Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.6 Extended Update Support
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Memory corruption
Published: 29 Sept 2026
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0052, the 44th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

29 Sept 2026, 17:15 UTC Confirmed by the CVE List
29 Sept 2026, 18:17 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:83384 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:83618 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:93445 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:93446 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:93447 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:93583 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-102560 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2543296 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.