10

CVE-2023-33189: Incorrect Authorization with specially crafted requests

Modified
AliasesGHSA-pvrc-wvj2-f59pGO-2023-1800
Published 30-05-2023Last modified 10-01-2025

Vulnerability summary

CVE-2023-33189 is a critical (CVSS 10.0) Improper Authorization vulnerability in pomerium. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 60.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 10 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.92%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 30-05-2023
    PublishedVulnerability first disclosed.
  2. 10-01-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.92%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.92% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/pomerium1 product
  • pomerium≥ 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 | ≥ 0.22.0, < 0.22.2
Pomerium1 product
  • pomerium≥ 0.20.0, < 0.20.1 | ≥ 0.18.0, < 0.18.1 | < 0.17.4 | ≥ 0.19.0, < 0.19.2 | ≥ 0.21.0, < 0.21.4 | ≥ 0.22.0, < 0.22.2 | 0.18.0 | 0.20.0

2 vendors · 2 products

References

10 links