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Fencer Vulns
medium 5.8

CVE-2009-3657 json

Session fixation vulnerability in Shared Sign-On 5.x and 6.x, a module for Drupal, allows remote attackers to hijack web sessions via unspe…

published 2009-10-09 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3632

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

Session fixation vulnerability in Shared Sign-On 5.x and 6.x, a module for Drupal, allows remote attackers to hijack web sessions via unspecified vectors.

Patch / fix

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.