Vulnerability-Lookup

OPENSUSE-SU-2026:10994-1

Vulnerability from csaf_opensuse - Published: 2026-06-11 00:00 - Updated: 2026-09-16 21:15

Summary

cpp-httplib-devel-0.46.1-1.1 on GA media

Severity

Moderate

Notes

Title of the patch: cpp-httplib-devel-0.46.1-1.1 on GA media

Description of the patch: These are all security issues fixed in the cpp-httplib-devel-0.46.1-1.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-10994

CVE-2026-45372

8.1 (High)


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

Affected products

Recommended 8 products

Product	Version	Remediation
Unresolved product id: openSUSE Tumbleweed:cpp-httplib-devel-0.46.1-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:cpp-httplib-devel-0.46.1-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:cpp-httplib-devel-0.46.1-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:cpp-httplib-devel-0.46.1-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2026-46527

7.5 (High)


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

Affected products

Recommended 8 products, the same list as for CVE-2026-45372

Threats

Impact important

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://www.suse.com/security/cve/CVE-2026-45372/	self
https://www.suse.com/security/cve/CVE-2026-46527/	self
https://www.suse.com/security/cve/CVE-2026-45372	external
https://bugzilla.suse.com/1267004	external
https://www.suse.com/security/cve/CVE-2026-46527	external
https://bugzilla.suse.com/1267006	external

JSON

To clipboard

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          "text": "cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib\u0027s server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \\r\\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.",
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          "text": "cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::set_trusted_proxies() with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid IP segments. The code path then executes get_client_ip(), which calls front() on an empty std::vector-undefined behavior in C++. On typical implementations this manifests as abnormal process termination (denial of service). With Sanitizers enabled, you get an explicit runtime diagnostic. This vulnerability is fixed in 0.44.0.",
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            "openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.aarch64",
            "openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.ppc64le",
            "openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.s390x",
            "openSUSE Tumbleweed:libcpp-httplib0_46-0.46.1-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-11T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-46527"
    }
  ]
}

CVE-2026-45372 (GCVE-0-2026-45372)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:21 – Updated: 2026-06-01 17:57

Title

cpp-httplib: HTTP header value percent-decoding in server-side `parse_header` enables CRLF injection

Summary

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.

Severity

9.9 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-01 17:57 UTC

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/yhirose/cpp-httplib/security/a…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
yhirose	cpp-httplib	Affected: < 0.44.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-46527 (GCVE-0-2026-46527)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:18 – Updated: 2026-06-01 13:52

Title

cpp-httplib: Malicious `X-Forwarded-For` Under Trusted-Proxy Configuration Triggers Empty `vector::front()`, Leading to Undefined Behavior and Server Crash

Summary

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::set_trusted_proxies() with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid IP segments. The code path then executes get_client_ip(), which calls front() on an empty std::vector—undefined behavior in C++. On typical implementations this manifests as abnormal process termination (denial of service). With Sanitizers enabled, you get an explicit runtime diagnostic. This vulnerability is fixed in 0.44.0.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-01 13:52 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/yhirose/cpp-httplib/security/a…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
yhirose	cpp-httplib	Affected: < 0.44.0

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OPENSUSE-SU-2026:10994-1

CVE-2026-45372 (GCVE-0-2026-45372)

CVE-2026-46527 (GCVE-0-2026-46527)

Tags

Sightings

Nomenclature

Related by attack behaviour