CVE-2024-25189

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it...

9.8 CriticalFix available

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.95%Up 0.9 points since Feb 9, 2024

What each source reports

NVD Score used 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: CVE-2024-25189
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-203
Updated: 2026-11-02

CVE List 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: CVE-2024-25189
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-203
Updated: 2026-11-02

EUVDEUVD-2024-22525 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: EUVD-2024-22525
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-m5gq-732f-j9v6 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it...

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: GHSA-m5gq-732f-j9v6
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-203
Updated: 2026-11-02

OSV 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: CVE-2024-25189
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2024-25189 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: DEBIAN-CVE-2024-25189
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-25189 9.8

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

Record: UBUNTU-CVE-2024-25189
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`libjwt` Debian:12	before 1.10.2-1+deb12u1, plus listed versions 1.10.2-1	1.10.2-1+deb12u1
`libjwt` Debian:13	before 1.17.0-2	1.17.0-2
`libjwt` Debian:14	before 1.17.0-2	1.17.0-2
`libjwt` Debian:10	before 1.10.1-1+deb10u1, plus listed versions 1.10.1-1	1.10.1-1+deb10u1
`libjwt` Ubuntu:18.04:LTS	All versions, plus listed versions 1.8.0+dfsg-11.8.0+dfsg-21.9.0-11.9.0-1build1	None known
`libjwt` Ubuntu:20.04:LTS	All versions, plus listed versions 1.10.2-1	None known
`libjwt` Ubuntu:22.04:LTS	All versions, plus listed versions 1.10.2-11.10.2-1build1	None known
`libjwt` Ubuntu:24.04:LTS	All versions, plus listed versions 1.10.2-1build11.17.0-21.17.0-2build11.17.0-2build2	None known
`libjwt` Ubuntu:25.10	All versions, plus listed versions 1.17.2-1	None known
`libjwt` Ubuntu:26.10	All versions, plus listed versions 1.17.2-1build11.17.2-1build2	None known
`libjwt` Ubuntu:26.04:LTS	All versions, plus listed versions 1.17.2-11.17.2-1build1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-25189 is a critical vulnerability (CVSS 9.8) in Libjwt, published February 8, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. Fixed in libjwt 1.10.2-1+deb12u1.

References

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