CrowCpp Crow up to 1.3.1 Response Header injection

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in CrowCpp Crow up to 1.3.1. Affected by this issue is some unknown functionality of the component Response Header Handler. This manipulation causes injection. This vulnerability appears as CVE-2026-38967. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical was found in CrowCpp Crow up to 1.3.1. Affected by this vulnerability is some unknown functionality of the component Response Header Handler. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-38967 since 04/06/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

04/06/2026 CVE reserved
06/02/2026 +57 days VulDB entry created
06/03/2026 +0 days Advisory disclosed
06/03/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 1165
Status: Confirmed

CVE: CVE-2026-38967 (🔒)
GCVE (CVE): GCVE-0-2026-38967
GCVE (VulDB): GCVE-100-368083

Entryinfo

Created: 06/03/2026 01:50
Changes: 06/03/2026 01:50 (56)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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