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Fencer Vulns
critical 10.0

CVE-2023-33189 json

Incorrect Authorization with specially crafted requests

published 2023-05-26 3 y ago modified 2026-09-10 1 mo ago also GHSA-pvrc-wvj2-f59p , GO-2023-1800 , EUVD-2023-1604

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization decisions may be made by Pomerium. This issue has been patched in versions 0.17.4, 0.18.1, 0.19.2, 0.20.1, 0.21.4 and 0.22.2.

Patch / fix

  • go github.com/pomerium/pomerium 0.17.4, 0.18.1, 0.19.2, 0.20.1, 0.21.4, 0.22.2
  • pomerium pomerium 0.17.4, 0.19.2, 0.21.4, 0.22.2

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/pomerium/pomerium
>=0.22.0, <0.22.2
>=0.21.0, <0.21.4
>=0.20.0, <0.20.1
>=0.19.0, <0.19.2
>=0.18.0, <0.18.1
<0.17.4
0.22.2
0.21.4
0.20.1
0.19.2
0.18.1
0.17.4

Affected products

  • pomerium pomerium

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.