9.1

CVE-2026-48188: otrs ag otrs Improper Input Validation

CVSS: 9.1v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-48188DEBIAN-CVE-2026-48188
Published 01-06-2026Last modified 01-06-2026
Open JSON

Vulnerability summary

CVE-2026-48188 is a critical (CVSS 9.1) Improper Input Validation vulnerability in otrs ag otrs. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · -0.25 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-06-2026
    PublishedVulnerability first disclosed.
  2. 01-06-2026
    Last modifiedVulnerability information updated.

Description

An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode. This issue affects OTRS: * 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.4.X * (OTRS)) Community Edition: 6.0.x Products based on the ((OTRS)) Community Edition also very likely to be affected

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

-0.25 pp

From 0.74% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.49%

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

Otrs ag2 products
  • otrs≥ 7.0.0, < 7.1.0 | ≥ 8.0.0, < 8.1.0 | ≥ 2023.0, < 2024.0 | ≥ 2024.0, < 2025.0 | ≥ 2025.0, < 2026.0 | ≥ 2026.x, ≤ 2026.3.x
  • ((otrs)) community edition≥ 6.0, < 7.0
Ubuntu2 products
  • otrs2All versions (No fix recorded)
  • znunyAll versions (No fix recorded)
Debian1 product
  • znunyAll versions (No fix recorded) | < 6.5.25-1
Otrs1 product
  • otrs≤ 6.0.32 | ≥ 7.0.0, ≤ 8.0.37 | ≥ 2023.0.0, < 2026.4.1

4 vendors · 6 products

References

5 links