CVE-2023-50110: TestLink through 1.9.20 allows type juggling for authentication bypass because === is not used.

Q: How do I fix CVE-2023-50110?

testlink: upgrade to newer than 1.9.20. Exact commands for each OS are on this page.

Q: Is CVE-2023-50110 being exploited?

CVE-2023-50110 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-50110 affect?

CVE-2023-50110 affects testlink. Severity is high (CVSS 7.5). TestLink through 1.9.20 allows type juggling for authentication bypass because === is not used.

Q: How urgent is CVE-2023-50110?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-50110 is a high-severity flaw (CVSS 7.5) affecting testlink. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TestLink through 1.9.20 allows type juggling for authentication bypass because === is not used.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Published	2023-12-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: testlink

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

Am I affected?

Timeline

2023-12-30 17:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

testlink testlink UPGRADE

Affected: <= 1.9.20

Fixed in: newer than 1.9.20

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.9.20 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade testlink

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade testlink

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-50110?

testlink: upgrade to newer than 1.9.20. Exact commands for each OS are on this page.

Is CVE-2023-50110 being exploited?

CVE-2023-50110 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-2023-50110 affect?

CVE-2023-50110 affects testlink. Severity is high (CVSS 7.5). TestLink through 1.9.20 allows type juggling for authentication bypass because === is not used.

How urgent is CVE-2023-50110?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-46097 HIGH 8.1 DOWNGRADE TestLink 1.9.20 is vulnerable to Incorrect Access Control in the TestPlan editing section
CVE-2024-42906 MEDIUM 6.1 UPGRADE TestLink before v.1.9.20 is vulnerable to Cross Site Scripting (XSS) via the pop-up on upload file

References

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