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CVE-2023-26130

26
FAUCET Score

CVE-2023-26130 is a CRLF Injection vulnerability affecting versions of the yhirose/cpp-httplib package prior to 0.12.4, specifically when untrusted user input is used to set the content-type header in HTTP .Patch, .Post, .Put, and .Delete requests. This vulnerability carries a high CVSS score of 8.8, indicating a network-based attack with low complexity and high impact on confidentiality, integrity, and availability, often requiring user interaction. While it is a critical vulnerability, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. This issue is a known incomplete fix for CVE-2020-11709.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12.4CPE matchmatch criteria
cpe:2.3:a:cpp-httplib_project:cpp-httplib:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.14%
Probability of exploitation in next 30 days
EPSS Percentile
63.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0114 is in the 62nd percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2023-26130Low

cpp-httplib: CRLF Injection

May 30, 2023

References

gist.github.com / dellalibera/094aece17a86069a7d27f93c8aba2280
Third Party Advisory
github.com / yhirose/cpp-httplib/commit/5b397d455d25a391ba346863830c1949627b4d08
Patch
github.com / yhirose/cpp-httplib/releases/tag/v0.12.4
Release Notes
lists.fedoraproject.org / archives/list/[email protected]/message/2RY6PKBU73I45L6YWNYCUK2XBEXEFX7L
lists.fedoraproject.org / archives/list/[email protected]/message/JY2E7EIRWQMKH6GY4OZOWWBZBY3Q7CGS
lists.fedoraproject.org / archives/list/[email protected]/message/NYODHZECXYFC2BNODZPZXZAXOKGMCYAP
lists.fedoraproject.org / archives/list/[email protected]/message/U6MO4FSKYNSAJVUXYP7LRY7ARUIGKBFL
security.snyk.io / vuln/SNYK-UNMANAGED-YHIROSECPPHTTPLIB-5591194
Third Party Advisory