Vulnerability · CVE-2026-1435
Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins.
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-2026-1435. EPSS is 0.43%. 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
- Critical9.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.43%
- Remediation
- Vendor / distro source
- Affected products
- vendor Graylog Graylog Web Interface 2.2.3
Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins. The application generates a new 'sessionId' each time a user authenticates, but does not invalidate previously issued session identifiers, which remain valid even after multiple consecutive logins by the same user. As a result, a stolen or leaked 'sessionId' can continue to be used to authenticate valid requests. Exploiting this vulnerability would allow an attacker with access to the web service/API network (port 9000 or HTTP/S endpoint
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-2026-1435
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-2026-1435. EPSS is 0.43%. 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 0.43%. 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
Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins. The application generates a new 'sessionId' each time a user authenticates, but does not invalidate previously issued session identifiers, which remain valid even after multiple consecutive logins by the same user. As a result, a stolen or le
Feb 18, 2026 · EUVD
Updated
Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins. The application generates a new 'sessionId' each time a user authenticates, but does not invalidate previously issued session identifiers, which remain valid even after multiple consecutive logins by the same user. As a result, a stolen or le
Sources
- CVE.orgVulnerability recordCVE-2026-1435
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-1435
30-day exploitation probability 0.43%
first.org - EUVDVulnerability recordEUVD-2026-7920
Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins. The application generates a new 'sessionId' each time a user authenticates, but does not invalidate previously issued sess
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