CVE-2024-34243: Konga v0.14.9 is vulnerable to Cross Site Scripting (XSS) via the username parameter.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2024-34243 is a medium-severity flaw (CVSS 5.4) affecting konga. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Konga v0.14.9 is vulnerable to Cross Site Scripting (XSS) via the username parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-05-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pantsel

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

Am I affected?

Timeline

2024-05-14 16:17 UTCPublished CVE record published
2026-06-17 07:33 UTCUpdated Record last modified

pantsel konga DOWNGRADE

Affected: 0.14.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.14.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.14.9 (Debian / Ubuntu)

apt-cache madison konga sudo apt install konga=<VERSION_BEFORE_0.14.9> sudo apt-mark hold konga

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

dnf --showduplicates list konga sudo dnf downgrade konga-<VERSION_BEFORE_0.14.9> sudo dnf versionlock add konga

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-2024-34243?

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

Is CVE-2024-34243 being exploited?

CVE-2024-34243 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-2024-34243 affect?

CVE-2024-34243 affects konga. Severity is medium (CVSS 5.4). Konga v0.14.9 is vulnerable to Cross Site Scripting (XSS) via the username parameter.

How urgent is CVE-2024-34243?

Priority 34/100. Public exploit reference

Related CVEs

CVE-2023-39846 CRITICAL 9.8 DOWNGRADE An issue in Konga v0.14.9 allows attackers to bypass authentication via a crafted JWT token.

References

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