8.8

CVE-2026-23921: zabbix SQL Injection

CVSS: 8.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-23921DEBIAN-CVE-2026-23921
Published 24-03-2026Last modified 26-03-2026
Open JSON

Vulnerability summary

CVE-2026-23921 is a high (CVSS 8.8) SQL Injection vulnerability in zabbix. EPSS estimates a 3.94% chance of exploitation in the next 30 days, higher than 90.2% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
3.94%
0%100%
Low · +0.44 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-03-2026
    PublishedVulnerability first disclosed.
  2. 26-03-2026
    Last modifiedVulnerability information updated.

Description

A low privilege Zabbix user with API access can exploit a blind SQL injection vulnerability in include/classes/api/CApiService.php to execute arbitrary SQL selects via the sortfield parameter. Although query results are not returned directly, an attacker can exfiltrate arbitrary database data through time-based techniques, potentially leading to session identifier disclosure and administrator account compromise.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

3.94%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

+0.44 pp

From 3.50% on 19-09-2026

19-09-202619-10-2026
EPSS score
3.94%

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

Debian1 product
  • zabbixAll versions (No fix recorded) | < 1:7.0.22+dfsg-1~deb13u1 | < 1:7.0.22+dfsg-1
Ubuntu1 product
  • zabbixAll versions (No fix recorded)
Zabbix1 product
  • zabbix≥ 7.0.0, ≤ 7.0.21 | ≥ 7.2.0, ≤ 7.2.14 | ≥ 7.4.0, ≤ 7.4.5 | ≥ 7.0.0, < 7.0.22 | ≥ 7.2.0, < 7.2.15 | ≥ 7.4.0, < 7.4.6

3 vendors · 3 products

References

4 links