CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Nostromo nhttpd Directory Traversal Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
Directory Traversal in the function http_verify in nostromo nhttpd through 1.9.6 allows an attacker to achieve remote code execution via a crafted HTTP request.
Affected products
nazgul: nostromo nhttpd
References10
- packetstormsecurity.com/files/155045/Nostromo-1.9.6-Directory-T… ExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/155802/nostromo-1.9.6-Remote-Code… ExploitThird Party AdvisoryVDB Entry
- git.sp0re.sh/sp0re/Nhttpd-exploits Broken LinkExploitThird Party Advisory
- packetstormsecurity.com/files/155045/Nostromo-1.9.6-Directory-T… ExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/155802/nostromo-1.9.6-Remote-Code… ExploitThird Party AdvisoryVDB Entry
- git.sp0re.sh/sp0re/Nhttpd-exploits Broken LinkExploitThird Party Advisory
- www.nazgul.ch/dev/nostromo_cl.txt Release Notes
- sp0re.sh Broken LinkNot Applicable
- www.nazgul.ch/dev/nostromo_cl.txt Release Notes
- sp0re.sh Broken LinkNot Applicable
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 99% percentile: 100 · as of 10 November 2026
- CWE
- CWE-22
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