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CVE-2020-1765· NVD / CVE Program· CNA OTRS

Spoofing of From field in several screens

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.4% (FIRST EPSS); higher than 73.2% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: otrs2 (Debian:10) 6.0.16-2+deb10u1; otrs2 (Debian:11) 6.0.25-1; otrs2 (Debian:8) 3.3.18-1+deb8u13.

Low priority for now. Upgrade to otrs2 (Debian:10) 6.0.16-2+deb10u1; otrs2 (Debian:11) 6.0.25-1; otrs2 (Debian:8) 3.3.18-1+deb8u13 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An improper control of parameters allows the spoofing of the from fields of the following screens: AgentTicketCompose, AgentTicketForward, AgentTicketBounce and AgentTicketEmailOutbound. 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. OTRS 7.0.x version 7.0.13 and prior versions.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Jan 10, 2020
Updated
Jun 16, 2026
EPSS
1.4% · 73th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.4%

CNA vs NVD score

NVD
5.3
CNA · OTRS
3.5
1.8 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-1765

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
otrsotrs
debiandebian linux
opensusebackports sle
opensuseleap

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux8.0
  • opensuse backports sle15.0
  • opensuse leap15.1
  • opensuse leap15.2
  • otrs otrs6.0.0 and later · up to 6.0.24 inclusive
  • otrs otrs7.0.0 and later · up to 7.0.13 inclusive
  • otrs otrs5.0.0 and later · up to 5.0.39 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (OTRS). Independent of NVD's CPE analysis and usually ahead of it.

  • OTRS AG ((OTRS)) Community Edition

    • 5.0.x version 5.0.39 and prior versions, 6.0.x version 6.0.24 and prior versionsaffected

  • OTRS AG OTRS

    • 7.0.x version 7.0.13 and prior versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10otrs2before 6.0.16-2+deb10u16.0.16-2+deb10u1
Debian:11otrs2before 6.0.25-16.0.25-1
Debian:8otrs2before 3.3.18-1+deb8u133.3.18-1+deb8u13
openSUSE:Leap 15.1otrsbefore 6.0.29-bp152.2.5.46.0.29-bp152.2.5.4
openSUSE:Leap 15.1otrsbefore 5.0.42-bp151.3.3.15.0.42-bp151.3.3.1
SUSE:Package Hub 15otrsbefore 5.0.42-bp151.3.3.15.0.42-bp151.3.3.1
SUSE:Package Hub 15 SP1otrsbefore 6.0.29-bp152.2.5.46.0.29-bp152.2.5.4
SUSE:Package Hub 15 SP2otrsbefore 6.0.29-bp152.2.8.16.0.29-bp152.2.8.1

Same product

otrs: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-16921In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who i
    41Plan
  • CVE-2024-23790Missing file type check in avatar picture upload
    39Monitor
  • CVE-2022-4427SQL Injection via OTRS Search API
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-18180Dec 5, 2019 · Improper Check for filenames with overly long extensions in PostMaster (sending in email) or uploading files (e.g.
    31Monitor
  • ← EarlierCVE-2019-18179Jan 6, 2020 · An issue was discovered in Open Ticket Request System (OTRS) 7.0.x through 7.0.12, and Community Edition 5.0.x through 5.0.38 and 6.0.x thro
    17Monitor
  • Later →CVE-2020-1766Jan 10, 2020 · Improper handling of uploaded inline images
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:otrs26.0.25-1 · Debian:11Package registry (OSV)
opensuse:otrs5.0.42-bp151.3.3.1 · openSUSE:Leap 15.1Package registry (OSV)
suse:otrs5.0.42-bp151.3.3.1 · SUSE:Package Hub 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-472 · External Control of Assumed-Immutable Web Parameter

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records