CVE-2025-8129

KoaJS Koa HTTP Header response.js back redirect

MEDIUM
6.1
CVSS Score
Published: July 25, 2025 at 04:02 AM UTC
Updated: June 17, 2026 at 10:06 AM UTC
1 product affected across 1 vendorKoa

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

A vulnerability, which was classified as problematic, was found in KoaJS Koa up to 3.0.0. Affected is the function back in the library lib/response.js of the component HTTP Header Handler. The manipulation of the argument Referrer leads to open redirect. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

Issue TrackingExploitPatchVendor Advisory
https://github.com/koajs/koa/issues/1892
ExploitIssue TrackingPatchThird Party AdvisoryVendor Advisory
https://github.com/koajs/koa/issues/1892#issue-3213028583
SignaturePermissions RequiredVDB Entry
https://vuldb.com/?ctiid.317514
VDB EntryTechnical DescriptionThird Party Advisory
https://vuldb.com/?id.317514
Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.619741

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-601

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