Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks
Published Jun 12, 2026
5.9
MEDIUMCVSS 3.1
EPSS 0.32%
Description
Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks.
These versions use Perl's built-in eq comparison. Discrepancies in timing could be used to guess the underlying derived-key.
Affected products
-
- Version 0StatusaffectedConstraints<0.261630
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Arodland | Crypt::PBKDF2 | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to version 0.261630 or later.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 12, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.32% (0.00319) | 22.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.32% (0.00320) | 23.47th | v5 (v2026.06.15) |
| Jun 13, 2026 | 0.03% (0.00030) | 9.34th | v4 (v2025.03.14) |
References (4)
- http://www.openwall.com/lists/oss-security/2026/06/12/3
- https://github.com/arodland/Crypt-PBKDF2/pull/6 issue-tracking
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.161520/source/lib/Crypt/PBKDF2.pm#L123-148
- https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes release-notes
Change history (0)
No recorded changes yet.