CVE-2026-38967 json
CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.
published 5mo ago modified 3mo ago also EUVD-2026-34020
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.
Patch / fix
- github.com/CrowCpp/Crow#1167 pull request
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 5mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers
References
Sources
- CVE List CVE-2026-38967
- NVD CVE-2026-38967
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