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CVE-2026-9641— Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations

Quick assessment

Affected
ARODLAND Crypt::PBKDF2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Perl 的 Crypt::PBKDF2 模块在 0.261630 版本之前存在默认算法和迭代次数过弱的问题。 该模块的默认算法为 HMAC-SHA1，此算法仅建议用于遗留系统。 这些版本默认仅使用 1000 次迭代。 根据所选算法的不同，建议使用 220,000 至 1,400,000 次迭代。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials

Affected Version Matrix 1

VendorProduct Version RangeStatus
ARODLAND Crypt::PBKDF2 < 0.261630 affected
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I. Basic Information for CVE-2026-9641

Vulnerability Information
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Vulnerability Title
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations
Source: CVE Program / CVE List V5
Vulnerability Description
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations. The default algorithm is HMAC-SHA1, which should only be used for legacy systems. These versions default to using 1000 iterations. Depending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有不充分计算复杂性的口令哈希
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ARODLAND Crypt::PBKDF2 0 ~ 0.261630 -

II. Public POCs for CVE-2026-9641

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III. Intelligence Information for CVE-2026-9641

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Other References for CVE-2026-9641 (1)

Same Patch Batch · ARODLAND · 2026-06-12 · 3 CVEs total

CVE-2026-9638 Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure random values for salts
CVE-2017-20240 Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks

IV. Related Vulnerabilities

Same product: Crypt::PBKDF2
Same vendor: ARODLAND
Same weakness: CWE-916

V. Comments for CVE-2026-9641

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