CVE-2020-26517: A cross-site scripting (XSS) issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4

Routine

MEDIUM 4.8DOWNGRADE

CVE-2020-26517 is a medium-severity flaw (CVSS 4.8) affecting codebeamer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cross-site scripting (XSS) issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4. It is possible to perform XSS attacks through using the WebDAV functionality to upload files to a project (Authn users), using the users import functionality (Admin only), and changing the login text in the application configuration (Admin only).

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-06-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: intland

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-06-08 13:15 UTCPublished CVE record published
2026-06-17 03:08 UTCUpdated Record last modified

intland codebeamer DOWNGRADE

Affected: 10.0.0 · 10.0.0 prerelease4 · 10.0.0 rc1 · 10.0.0 sp1 · 10.0.0 sp2 · 10.0.1 sp1 · 10.1.0 · 10.1.0 sp1

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0.0

1. Check installed version

apt-cache policy codebeamer || rpm -q codebeamer || codebeamer --version

2. No fixed release: DOWNGRADE to a release before 10.0.0 (Debian / Ubuntu)

apt-cache madison codebeamer sudo apt install codebeamer=<VERSION_BEFORE_10.0.0> sudo apt-mark hold codebeamer

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list codebeamer sudo dnf downgrade codebeamer-<VERSION_BEFORE_10.0.0> sudo dnf versionlock add codebeamer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-26517?

codebeamer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-26517 being exploited?

CVE-2020-26517 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-26517 affect?

CVE-2020-26517 affects codebeamer. Severity is medium (CVSS 4.8). A cross-site scripting (XSS) issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4. It is possible to perform XSS attacks through using the WebDAV functionality to upload files to a project (Authn users), using the users impo

How urgent is CVE-2020-26517?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2020-26516 HIGH 8.8 DOWNGRADE A CSRF issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4
CVE-2020-26515 HIGH 7.5 UPGRADE An insufficiently protected credentials issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4
CVE-2020-26513 MEDIUM 5.5 UPGRADE An issue was discovered in Intland codeBeamer ALM 10.x through 10.1.SP4
CVE-2019-20635 MEDIUM 6.1 UPGRADE codeBeamer before 9.5.0-RC3 does not properly restrict the ability to execute custom Java code and access the
CVE-2019-19913 MEDIUM 4.8 UPGRADE In Intland codeBeamer ALM 9.5 and earlier, there is stored XSS via the Trackers Title parameter.

References

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