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CVE-2025-40905

25
FAUCET Score

CVE-2025-40905 describes a cryptographic weakness in WWW::OAuth 1.000 and earlier for Perl, where the rand() function, an insecure source of entropy, is used for cryptographic operations. This vulnerability carries a CVSS score of 7.3 (HIGH), indicating that an unauthenticated attacker can exploit it over the network with low complexity to achieve low impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.000CPE matchmatch criteria
cpe:2.3:a:dbook:www\:\:oauth:*:*:*:*:*:perl:*:*
>= 0, <= 1.000CPE match
cpe:2.3:a:dbook:www\:\:oauth:*:*:*:*:*:perl:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 3rd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

metacpan.org / release/DBOOK/WWW-OAuth-1.000/source/lib/WWW/OAuth.pm
Issue TrackingProduct
perldoc.perl.org / functions/rand
Third Party Advisory
security.metacpan.org / docs/guides/random-data-for-security.html
Third Party Advisory
openwall.com / lists/oss-security/2026/02/13/1
Mailing ListThird Party Advisory