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Fencer Vulns
medium 4.6

CVE-2020-1771 json

Possible XSS in Customer user address book

published 2020-03-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12597

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

Attacker is able craft an article with a link to the customer address book with malicious content (JavaScript). When agent opens the link, JavaScript code is executed due to the missing parameter encoding. This issue affects: ((OTRS)) Community Edition: 6.0.26 and prior versions. OTRS: 7.0.15 and prior versions.

Patch / fix

  • otrs2 Debian 11 6.0.27-1

debian advisories DEBIAN-CVE-2020-1771

  • otrs Package Hub 15 SP2 6.0.29-bp152.2.8.1
  • otrs Package Hub 15 SP2, Package Hub 15 SP1, openSUSE Leap 15.2 +1 more 6.0.29-bp152.2.5.4
  • otrs Package Hub 15 SP1, Package Hub 15, openSUSE Leap 15.1 5.0.42-bp151.3.3.1

opensuse advisories openSUSE-SU-2020:1509-1openSUSE-SU-2020:1475-1openSUSE-SU-2020:0551-1

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

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

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.