MEDIUM
JWT.php in F21 JWT before 2.0 allows remote attackers to bypass signature verification via crafted tokens
Published Jun 5, 2015
5.0
MEDIUMCVSS 2.0
EPSS 3.75%
Description
JWT.php in F21 JWT before 2.0 allows remote attackers to bypass signature verification via crafted tokens.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.75% 0.03746
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03746
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.75% (0.03746) | 89.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.77% (0.03773) | 88.50th | v5 (v2026.06.15) |
| Jun 3, 2026 | 8.76% (0.08764) | 92.66th | v4 (v2025.03.14) |
| May 29, 2026 | 3.25% (0.03246) | 87.34th | v4 (v2025.03.14) |
| Nov 1, 2025 | 1.40% (0.01400) | 79.88th | v4 (v2025.03.14) |
| Sep 4, 2025 | 2.97% (0.02970) | 86.00th | v4 (v2025.03.14) |
| Sep 1, 2025 | 1.96% (0.01962) | 82.86th | v4 (v2025.03.14) |
| Aug 24, 2025 | 2.97% (0.02970) | 85.96th | v4 (v2025.03.14) |
| Jul 18, 2025 | 1.78% (0.01777) | 81.88th | v4 (v2025.03.14) |
| May 21, 2025 | 0.48% (0.00483) | 64.12th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.78% (0.01777) | 81.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00307) | 70.67th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00307) | 69.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.31% (0.00307) | 65.09th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://jvn.jp/en/jp/JVN06120222/index.html third-party-advisoryx_refsource_JVNVendor Advisory
- http://jvndb.jvn.jp/jvndb/JVNDB-2015-000073 third-party-advisoryx_refsource_JVNDBVendor Advisory
- http://www.securityfocus.com/bid/75021 vdb-entryx_refsource_BID
- https://github.com/F21/jwt/commit/a327cf9052df8f9f97728ca0b5fa78a8231b79b6 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://jvn.jp/en/jp/JVN06120222/index.html | third-party-advisoryx_refsource_JVNVendor Advisory | |
| http://jvndb.jvn.jp/jvndb/JVNDB-2015-000073 | third-party-advisoryx_refsource_JVNDBVendor Advisory | |
| http://www.securityfocus.com/bid/75021 | vdb-entryx_refsource_BID | |
| https://github.com/F21/jwt/commit/a327cf9052df8f9f97728ca0b5fa78a8231b79b6 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner jpcert
Published Jun 5, 2015
Updated Aug 6, 2024
Reserved Apr 7, 2015
Link CVE-2015-2951
CISA Vulnrichment
Updated n/a