libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because…
Priority MEDIUM 47CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soup_ntlm_parse_challenge() in soup-auth-ntlm.c does not properly check an NTLM message's length before proceeding with a memcpy.
Why it matters now
EPSS 0.02784 86th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2019-17266
- 2026-10-03 Alias added: GHSA-wcxh-xxc8-v5j8
References
Advisory 7
- https://gitlab.gnome.org/GNOME/libsoup/issues/173
- https://security-tracker.debian.org/tracker/CVE-2019-17266
- https://gitlab.gnome.org/GNOME/libsoup/commit/88b7dff4467f4151afae244ea7d1223753cd05ab
- https://github.com/Kirin-say/Vulnerabilities/blob/master/CVE-2019-17266_POC.md
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941912
- https://gitlab.gnome.org/GNOME/libsoup/commit/f8a54ac85eec2008c85393f331cdd251af8266ad
- USN-4152-1
Sources
- CVE-2019-17266 · CVE Program
- CVE-2019-17266 · NVD
- FIRST EPSS
- GHSA-wcxh-xxc8-v5j8 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-17266 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences