OTRS Security Advisory 2020-02

Release Note

OTRS Security Advisory 2020-02

January 10, 2020 — Please read carefully and check if the version of your OTRS system is affected by this vulnerability.

Please send information regarding vulnerabilities in OTRS to: security@otrs.org


  • pub 2048R/9C227C6B 2011-03-21
  • uid OTRS Security Team <security@otrs.org>
  • GPG Fingerprint E330 4608 DA6E 34B7 1551 C244 7F9E 44E9 9C22 7C6B

Security Advisory Details

  • ID: OSA-2020-02
  • Date: 2020-01-10
  • Title: Improper handling of uploaded inline images
  • Severity: 2.0 LOW
  • Product: OTRS 7.0.x, ((OTRS)) Community Edition 6.0.x, ((OTRS)) Community Edition 5.0.x
  • Fixed in: OTRS 7.0.14, ((OTRS)) Community Edition 6.0.25, ((OTRS)) Community Edition 5.0.40
  • References: CVE-2020-1766

OSA-2020-02 Improper handling of uploaded inline images (CVE-2020-1766)

Product Affected:

This issue affects ((OTRS)) Community Edition 5.0.x, 6.0.x. This issue affects OTRS 7.0.x.


Due to improper handling of uploaded images it is possible in very unlikely and rare conditions to force the agents browser to execute malicious javascript from a special crafted SVG file rendered as inline jpg file.

This issue affects:

((OTRS)) Community Edition
5.0.x version 5.0.39 and prior versions;
6.0.x version 6.0.24 and prior versions.

7.0.x version 7.0.13 and prior versions.

This issue was discovered during an external security research.
This issue has been assigned CVE-2020-1766.


Upgrade to OTRS 7.0.14, ((OTRS)) Community Edition 6.0.25, ((OTRS)) Community Edition 5.0.40

Patch for ((OTRS)) Community Edition 6: https://github.com/OTRS/otrs/commit/128078b0bb30f601ed97d4a13906644264ee6013

Patch for ((OTRS)) Community Edition 5: https://github.com/OTRS/otrs/commit/b7d80f9000fc9a435743d8d1d7d44d9a17483a9a

This issue is being tracked as 2019112942001838.

Modification History:

  • 2020-01-10: Initial Publication.

Related Links:

CVSS Score:

Risk Level:

  • LOW


  • Anton Astaf’ev

Release Details

  • Release name:
    OTRS Security Advisory 2020-02
  • Release date:
    10. January 2020
  • Release type:
    security advisories