CVE-2024-27477: In Leantime 3.0.6, a Cross-Site Scripting vulnerability exists within the ticket creation and modification fun

Routine

MEDIUM 6.1DOWNGRADE

CVE-2024-27477 is a medium-severity flaw (CVSS 6.1) affecting leantime. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Leantime 3.0.6, a Cross-Site Scripting vulnerability exists within the ticket creation and modification functionality, allowing attackers to inject malicious JavaScript code into the title field of tickets (also known as to-dos). This stored XSS vulnerability can be exploited to perform Server-Side Request Forgery (SSRF) attacks.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-04-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: leantime

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

Am I affected?

Timeline

2024-04-10 15:16 UTCPublished CVE record published
2026-06-17 07:19 UTCUpdated Record last modified

leantime leantime DOWNGRADE

Affected: 3.0.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0.6 (Debian / Ubuntu)

apt-cache madison leantime sudo apt install leantime=<VERSION_BEFORE_3.0.6> sudo apt-mark hold leantime

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

dnf --showduplicates list leantime sudo dnf downgrade leantime-<VERSION_BEFORE_3.0.6> sudo dnf versionlock add leantime

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-2024-27477?

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

Is CVE-2024-27477 being exploited?

CVE-2024-27477 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-2024-27477 affect?

CVE-2024-27477 affects leantime. Severity is medium (CVSS 6.1). In Leantime 3.0.6, a Cross-Site Scripting vulnerability exists within the ticket creation and modification functionality, allowing attackers to inject malicious JavaScript code into the title field of tickets (also known as to-dos). This st

How urgent is CVE-2024-27477?

Priority 39/100. Public exploit reference

Related CVEs

CVE-2025-28254 MEDIUM 5.4 UPGRADE Cross Site Scripting vulnerability in Leantime v3.2.1 and before allows an authenticated attacker to execute a
CVE-2024-27705 HIGH 7.6 DOWNGRADE Cross Site Scripting vulnerability in Leantime v3.0.6 allows attackers to execute arbitrary code via upload of
CVE-2024-27476 MEDIUM 4.7 DOWNGRADE Leantime 3.0.6 is vulnerable to HTML Injection via /dashboard/show#/tickets/newTicket.
CVE-2024-27474 HIGH 8.8 DOWNGRADE Leantime 3.0.6 is vulnerable to Cross Site Request Forgery (CSRF)

References

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