Cyber Resilience

CVE-2025-14524

Open Redirect in Haxx Curl 7.33.0 – 8.18.0

Public PoCOpen Redirect
Published
08 January 2026
Modified
20 January 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS Score 0.0061 46th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-14524 is a medium-severity Open Redirect (CWE-601) vulnerability in Haxx Curl. Its CVSS base score is 5.3 (Medium).

Operationally, ranked at the 46th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a cross-protocol redirect to a second URL that uses an IMAP, LDAP, POP3 or SMTP scheme, curl might wrongly pass on the bearer token to…

more

the new target host.

CWE(s)
CWE-601

Related Threats

CVEs Like This One

CVE-2025-5399Same product: Haxx Curl
CVE-2026-6429Same product: Haxx Curl
CVE-2026-8926Same product: Haxx Curl
CVE-2026-9079Same product: Haxx Curl
CVE-2026-9545Same product: Haxx Curl
CVE-2025-15224Same product: Haxx Curl
CVE-2025-14017Same product: Haxx Curl
CVE-2025-13034Same product: Haxx Curl
CVE-2026-3784Same product: Haxx Curl
CVE-2026-7168Same product: Haxx Curl

Affected Assets

haxx
curl
7.33.0 — 8.18.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-4 Information Flow Enforcement
  • AC-3 Access Enforcement
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.7.2

Mitigating Controls (NIST 800-53 r5) AI

AC-4 Information Flow Enforcement good match
prevent

Enforces information-flow rules that block bearer tokens from being forwarded across protocol boundaries during redirects.

AC-3 Access Enforcement good match
prevent

Access-enforcement mechanisms can deny the unauthorized transmission of OAuth2 tokens to non-HTTP endpoints reached via redirect.

AC-6 Least Privilege partial match
prevent

Least-privilege scoping of bearer tokens limits the damage if a token is inadvertently sent to an IMAP/LDAP/POP3/SMTP host.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and untrusted-redirect controls that prevent CWE-601.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.23 Web filtering partial match
mitigates

Preventing access to attacker-controlled or malicious sites stops users from being redirected to untrusted locations via open-redirect or phishing links.

References