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Fencer Vulns
critical 9.8

CVE-2016-10321 json

web2py is vulnerable to password brute-force attack

published 2017-04-10 9 y ago modified 2026-07-01 4 mo ago also GHSA-gv85-wgxc-vc56 , PYSEC-2026-569 , EUVD-2022-4011

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

web2py before 2.14.6 does not properly check if a host is denied before verifying passwords, allowing a remote attacker to perform brute-force attacks.

Patch / fix

  • pypi web2py 2.14.6
  • web2py Ubuntu 16.04 LTS 2.12.3-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-10321

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

2.61% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi web2py
<2.14.6
2.14.6

Classification

Weakness
  • CWE-254 7PK - Security Features
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

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.