HIGH
The verify function in Encryption/Symmetric.php in Malcolm Fell jwt before 1.0.3 does not use a timing-safe function for hash comparison, which allows attackers to spoof signatures via a timing attack
Published Jan 23, 2017
7.5
HIGHCVSS 3.0
EPSS 0.72%
Description
The verify function in Encryption/Symmetric.php in Malcolm Fell jwt before 1.0.3 does not use a timing-safe function for hash comparison, which allows attackers to spoof signatures via a timing attack.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
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.
0.72% 0.00724
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00724
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.72% (0.00724) | 52.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.72% (0.00724) | 49.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00140) | 31.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00133) | 50.07th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.13% (0.00133) | 48.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00133) | 46.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- http://www.securityfocus.com/bid/95847 vdb-entryx_refsource_BID
- https://github.com/emarref/jwt/pull/20 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/emarref/jwt/releases/tag/1.0.3 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/95847 | vdb-entryx_refsource_BID | |
| https://github.com/emarref/jwt/pull/20 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/emarref/jwt/releases/tag/1.0.3 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jan 23, 2017
Updated Aug 6, 2024
Reserved Aug 23, 2016
Link CVE-2016-7037
CISA Vulnrichment
Updated n/a