CVE-2025-45770
jwt v5.4.3 was discovered to contain weak encryption.
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
CVE-2025-45770- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
EUVDEUVD-2025-23299
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
EUVD-2025-23299- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hp45-3w87-63c3
jwt v5.4.3 was discovered to contain weak encryption.
jwt v5.4.3 was discovered to contain weak encryption.
- Record
GHSA-hp45-3w87-63c3- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
NVD
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
CVE-2025-45770- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
OSV
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
CVE-2025-45770- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-45770
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
DEBIAN-CVE-2025-45770- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-45770
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
- Record
UBUNTU-CVE-2025-45770- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
php-lcobucci-jwtDebian:13 |
All versions, plus listed versions 5.5.0-15.5.0-25.6.0-1 |
None known |
php-lcobucci-jwtDebian:14 |
All versions, plus listed versions 5.5.0-15.5.0-25.6.0-1 |
None known |
php-lcobucci-jwtUbuntu:24.04:LTS |
All versions, plus listed versions 5.2.0-1 |
None known |
php-lcobucci-jwtUbuntu:25.10 |
All versions, plus listed versions 5.5.0-1 |
None known |
php-lcobucci-jwtUbuntu:26.10 |
All versions, plus listed versions 5.6.0-1 |
None known |
php-lcobucci-jwtUbuntu:26.04:LTS |
All versions, plus listed versions 5.5.0-15.6.0-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-45770 is a high vulnerability (CVSS 7.0) in Jwt Project Jwt, published July 31, 2025. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 3rd percentile.