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Fencer Vulns
high 7.5

CVE-2021-3814 json

It was found that 3scale's APIdocs does not validate the access token, in the case of invalid token, it uses session auth instead.

published 2022-03-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27068

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

It was found that 3scale's APIdocs does not validate the access token, in the case of invalid token, it uses session auth instead. This conceivably bypasses access controls and permits unauthorized information disclosure.

Patch / fix

  • redhat 3scale 2.11.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-3814 updated cvss 6.3

3scale: missing validation of access token

  • Red Hat 3Scale AMP 2.11 3scale-amp2/system-rhel7 1.15.0-8, 3scale-amp2/zync-rhel8 3scale2.11.0, 3scale-amp2/backend-rhel8 3scale2.11.0, 3scale-amp2/toolbox-rhel8 3scale2.11.0, 3scale-amp2/memcached-rhel7 3scale2.11.0, 3scale-amp2/3scale-rhel7-operator 3scale2.11.0, +4 more
    fixed: vendor fix RHSA-2021:3851

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a 3scale

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.