Invalidating or changing user does not invalidate session

published 2020-07-20 6y ago modified 2026-06-17 4mo ago also EUVD-2020-12602

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

When an agent user is renamed or set to invalid the session belonging to the user is keept active. The session can not be used to access ticket data in the case the agent is invalid. This issue affects ((OTRS)) Community Edition: 6.0.28 and prior versions. OTRS: 7.0.18 and prior versions, 8.0.4. and prior versions.

Patch / fix

fixed in 1 distros 1 links 1

otrs otrs 6.0.29, 7.0.19, 8.0.5

otrs2 Debian 11 6.0.29-1

debian advisories DEBIAN-CVE-2020-1776

otrs.com/release-notes/otrs-security-advisory-2020-13/ advisory

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Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

OTRS AG ((OTRS)) Community Edition
OTRS AG OTRS

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

otrs.com /release-notes/otrs-security-advisory-2020-13/
patch, vendor-advisory
lists.debian.org /debian-lts-announce/2023/08/msg00040.html
mailing-list

Sources

CVE List CVE-2020-1776
NVD CVE-2020-1776

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