5.3

CVE-2025-14524: bearer token leak on cross-protocol redirect

Modified
AliasesALPINE-CVE-2025-14524UBUNTU-CVE-2025-14524DEBIAN-CVE-2025-14524
Published 08-01-2026Last modified 15-09-2026

Vulnerability summary

CVE-2025-14524 is a medium (CVSS 5.3) Insufficiently Protected Credentials vulnerability in curl. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 52.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 14 · Related 12
MGASA-2026-0003OPENSUSE-SU-2026:10017-1OPENSUSE-SU-2026:20031-1RHSA-2026:6893SUSE-SU-2026:0050-1SUSE-SU-2026:0051-1

Timeline

  1. 08-01-2026
    PublishedVulnerability first disclosed.
  2. 15-09-2026
    Last modifiedVulnerability information updated.

Description

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 the new target host.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.68% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • curl≥ 7.33.0, < 8.14.1-r3 | ≥ 7.33.0, < 8.14.1-r4 | ≥ 7.33.0, < 8.18.0-r0
Chainguard1 product
  • libcurl4All versions (No fix recorded)
Curl1 product
  • curl≥ 7.33.0, < 8.14.2 | ≥ 8.15.0, < 8.16.1 | ≥ 8.17.0, < 8.18.0 | ≥ 06c1bea72faabb6fad4b7ef818aafaa336c9a7aa, < 1a822275d333dc6da6043497160fd04c8fa48640 | 8.17.0 | 8.16.0 | 8.15.0 | 8.14.1 | 8.14.0 | 8.13.0 | 8.12.1 | 8.12.0 | 8.11.1 | 8.11.0 | 8.10.1 | 8.10.0 | 8.9.1 | 8.9.0 | 8.8.0 | 8.7.1 | 8.7.0 | 8.6.0 | 8.5.0 | 8.4.0 | 8.3.0 | 8.2.1 | 8.2.0 | 8.1.2 | 8.1.1 | 8.1.0 | 8.0.1 | 8.0.0 | 7.88.1 | 7.88.0 | 7.87.0 | 7.86.0 | 7.85.0 | 7.84.0 | 7.83.1 | 7.83.0 | 7.82.0 | 7.81.0 | 7.80.0 | 7.79.1 | 7.79.0 | 7.78.0 | 7.77.0 | 7.76.1 | 7.76.0 | 7.75.0 | 7.74.0 | 7.73.0 | 7.72.0 | 7.71.1 | 7.71.0 | 7.70.0 | 7.69.1 | 7.69.0 | 7.68.0 | 7.67.0 | 7.66.0 | 7.65.3 | 7.65.2 | 7.65.1 | 7.65.0 | 7.64.1 | 7.64.0 | 7.63.0 | 7.62.0 | 7.61.1 | 7.61.0 | 7.60.0 | 7.59.0 | 7.58.0 | 7.57.0 | 7.56.1 | 7.56.0 | 7.55.1 | 7.55.0 | 7.54.1 | 7.54.0 | 7.53.1 | 7.53.0 | 7.52.1 | 7.52.0 | 7.51.0 | 7.50.3 | 7.50.2 | 7.50.1 | 7.50.0 | 7.49.1 | 7.49.0 | 7.48.0 | 7.47.1 | 7.47.0 | 7.46.0 | 7.45.0 | 7.44.0 | 7.43.0 | 7.42.1 | 7.42.0 | 7.41.0 | 7.40.0 | 7.39.0 | 7.38.0 | 7.37.1 | 7.37.0 | 7.36.0 | 7.35.0 | 7.34.0 | 7.33.0
Debian1 product
  • curl< 7.88.1-10+deb12u15 | < 8.14.1-2+deb13u4 | < 8.18.0~rc2-1
Haxx1 product
  • curl≥ 7.33.0, < 8.18.0
Ubuntu1 product
  • curlAll versions (No fix recorded) | < 7.81.0-1ubuntu1.22 | < 8.5.0-2ubuntu10.7 | < 8.14.1-2ubuntu1.1
Wolfi1 product
  • libcurl4All versions (No fix recorded)

7 vendors · 7 products

References

10 links