CVE-2011-5307: Cross-site scripting (XSS) vulnerability in index.php in the PhotoSmash plugin 1.0.1 for WordPress allows remo

Routine

MEDIUM 4.3DOWNGRADE

CVE-2011-5307 is a medium-severity flaw (CVSS 4.3) affecting photosmash. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in index.php in the PhotoSmash plugin 1.0.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the action parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-79
Published	2015-01-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: photosmash project

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-01-01 11:59 UTCPublished CVE record published
2026-06-16 23:36 UTCUpdated Record last modified

photosmash project photosmash DOWNGRADE

Affected: 1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.01 (Debian / Ubuntu)

apt-cache madison photosmash sudo apt install photosmash=<VERSION_BEFORE_1.01> sudo apt-mark hold photosmash

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

dnf --showduplicates list photosmash sudo dnf downgrade photosmash-<VERSION_BEFORE_1.01> sudo dnf versionlock add photosmash

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-2011-5307?

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

Is CVE-2011-5307 being exploited?

CVE-2011-5307 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-2011-5307 affect?

CVE-2011-5307 affects photosmash. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in index.php in the PhotoSmash plugin 1.0.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the action parameter.

How urgent is CVE-2011-5307?

Priority 39/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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