8.1

CVE-2023-2534: otrs ag otrs Improper Authorization

CVSS: 8.1v3.1HighModified
Published 08-05-2023Last modified 29-01-2025
Open JSON

Vulnerability summary

CVE-2023-2534 is a high (CVSS 8.1) Improper Authorization vulnerability in otrs ag otrs. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-05-2023
    PublishedVulnerability first disclosed.
  2. 29-01-2025
    Last modifiedVulnerability information updated.

Description

Improper Authorization vulnerability in OTRS AG OTRS 8 (Websocket API backend) allows any as Agent authenticated attacker to track user behaviour and to gain live insight into overall system usage. User IDs can easily be correlated with real names e. g. via ticket histories by any user. (Fuzzing for garnering other adjacent user/sensitive data). Subscribing to all possible push events could also lead to performance implications on the server side, depending on the size of the installation and the number of active users. (Flooding)This issue affects OTRS: from 8.0.X before 8.0.32.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.53% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Otrs1 product
  • otrs≥ 8.0.0, < 8.0.32
Otrs ag1 product
  • otrs≥ 8.0.x, < 8.0.32

2 vendors · 2 products

References

1 links