CVE-2026-12548A heap out-of-bounds read flaw was found in libsoup.
Updated under an hour ago ()
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It affects gnome libsoup and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
A heap out-of-bounds read flaw was found in libsoup. When parsing multipart HTTP messages, an integer type mismatch between the caller and soup_headers_parse() can cause the length parameter to be incorrectly truncated, leading to a heap buffer over-read. A remote attacker could use this flaw to crash an application using libsoup or potentially disclose heap memory contents.
- CVSS
- 4.2 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Aug 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
gnome libsoup gnome:libsoup | all versions | NVD |
redhat enterprise_linux redhat:enterprise_linux | 10.0 | NVD |
References
- https://access.redhat.com/security/cve/CVE-2026-12548vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2489996exploit, issue-tracking, vendor-advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/512exploit, mitigation, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.