Vulnerability · CVE-2026-1436
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL.
Published Feb 18, 2026 · catalog updated Feb 18, 2026 · Graylog Graylog Web Interface
Last checked Nov 14, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-1436. EPSS is 0.25%. Act only if a listed version of Graylog Graylog Web Interface is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-1441 · Medium
- CVE-2026-1440 · Medium
- CVE-2026-1439 · Medium
- CVE-2026-1438 · Medium
- CVE-2026-1437 · Medium
- Severity
- High7.1
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.25%
- Remediation
- Vendor / distro source
- Affected products
- vendor Graylog Graylog Web Interface 2.2.3
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be listed and sensitive third-party information to be accessed, such as names, email addresses, internal identifiers, and last activity. The endpoint 'http:// :12900/users/ ' does not implement object-level authorization validations.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Graylog Graylog Web Interface 2.2.32.2.3
How to fix CVE-2026-1436
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 2.2.3
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-1436. EPSS is 0.25%. Act only if a listed version of Graylog Graylog Web Interface is installed.
Which versions are affected?
Compare what you have installed with Graylog Graylog Web Interface 2.2.3 2.2.3. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 18, 2026 · EUVD
Detected
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be listed and sensitive third-party information to be accessed, such as names, email addresses, internal identifiers, and la
Feb 18, 2026 · EUVD
Updated
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be listed and sensitive third-party information to be accessed, such as names, email addresses, internal identifiers, and la
Sources
- CVE.orgVulnerability recordCVE-2026-1436
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-1436
30-day exploitation probability 0.25%
first.org - EUVDVulnerability recordEUVD-2026-8076
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be l
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 14, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 14, 2026
- CVE.orgNov 9, 2026
- EUVDNov 9, 2026