CVE-2023-53939: TinyWebGallery v2.5 contains a stored cross-site scripting vulnerability that allows authenticated attackers t

Routine

MEDIUM 5.4DOWNGRADE

CVE-2023-53939 is a medium-severity flaw (CVSS 5.4) affecting tinywebgallery. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TinyWebGallery v2.5 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the folder name parameter. Attackers can edit album folder names with script tags to execute arbitrary JavaScript when other users view the affected gallery pages.

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	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-12-18
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: tinywebgallery

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

Am I affected?

Timeline

2025-12-18 20:15 UTCPublished CVE record published
2026-06-17 06:46 UTCUpdated Record last modified

tinywebgallery tinywebgallery DOWNGRADE

Affected: 2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.5 (Debian / Ubuntu)

apt-cache madison tinywebgallery sudo apt install tinywebgallery=<VERSION_BEFORE_2.5> sudo apt-mark hold tinywebgallery

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

dnf --showduplicates list tinywebgallery sudo dnf downgrade tinywebgallery-<VERSION_BEFORE_2.5> sudo dnf versionlock add tinywebgallery

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-2023-53939?

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

Is CVE-2023-53939 being exploited?

CVE-2023-53939 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-2023-53939 affect?

CVE-2023-53939 affects tinywebgallery. Severity is medium (CVSS 5.4). TinyWebGallery v2.5 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the folder name parameter. Attackers can edit album folder names with script tags to execute ar

How urgent is CVE-2023-53939?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2023-53922 CRITICAL 9.8 DOWNGRADE TinyWebGallery v2.5 contains a remote code execution vulnerability in the admin upload functionality that allo

References

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