Use-after-free vulnerabilities in lighttpd <= 1.4.50
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
There exists use-after-free vulnerabilities in lighttpd <= 1.4.50 request parsing which might read from invalid pointers to memory used in the same request, not from other requests.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00662 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-25103
- 2026-10-03 Alias added: GHSA-844m-hq7r-wxc8
References
Other 6
- https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
- https://www.runzero.com/blog/lighttpd/
- https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
- https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
- https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
- https://www.kb.cert.org/vuls/id/312260
More lighttpd vulnerabilities
- TI-2019-08280 lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers… CVSS 3.0CRITICAL 9.8
- TI-2014-01841 SQL injection vulnerability in mod_mysql_vhost.c in lighttpd before 1.4.35 allows remote… CVSS 3.1CRITICAL 9.8
- TI-2022-12909 Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU… CVSS 3.1HIGH 7.5
- TI-2018-13505 An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before… CVSS 3.1HIGH 7.5
- TI-2014-01842 Multiple directory traversal vulnerabilities in (1) mod_evhost and (2) mod_simple_vhost… CVSS 2.0MEDIUM 5.0
- TI-2013-04004 lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or… CVSS 2.0HIGH 7.6
Sources
- CVE-2018-25103 · CVE Program
- CVE-2018-25103 · NVD
- FIRST EPSS
- GHSA-844m-hq7r-wxc8 · GitHub Advisory Database · CC BY 4.0
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