CVE-2013-3491: Multiple cross-site request forgery (CSRF) vulnerabilities in the Sharebar plugin 1.2.5 for WordPress allow re

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MEDIUM 6.8DOWNGRADE

CVE-2013-3491 is a medium-severity flaw (CVSS 6.8) affecting sharebar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site request forgery (CSRF) vulnerabilities in the Sharebar plugin 1.2.5 for WordPress allow remote attackers to hijack the authentication of administrators for requests that (1) add or (2) modify buttons, or (3) insert cross-site scripting (XSS) sequences.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-352
Published	2013-07-16
Last modified	2026-06-16

Publisher (CNA): Flexera Software LLC · Vendor: mdolon

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

Am I affected?

Timeline

2013-07-16 14:08 UTCPublished CVE record published
2026-06-16 23:55 UTCUpdated Record last modified

mdolon sharebar DOWNGRADE

Affected: 1.2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.5 (Debian / Ubuntu)

apt-cache madison sharebar sudo apt install sharebar=<VERSION_BEFORE_1.2.5> sudo apt-mark hold sharebar

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

dnf --showduplicates list sharebar sudo dnf downgrade sharebar-<VERSION_BEFORE_1.2.5> sudo dnf versionlock add sharebar

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-2013-3491?

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

Is CVE-2013-3491 being exploited?

CVE-2013-3491 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-2013-3491 affect?

CVE-2013-3491 affects sharebar. Severity is medium (CVSS 6.8). Multiple cross-site request forgery (CSRF) vulnerabilities in the Sharebar plugin 1.2.5 for WordPress allow remote attackers to hijack the authentication of administrators for requests that (1) add or (2) modify buttons, or (3) insert cross

How urgent is CVE-2013-3491?

Priority 40/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2022-1626 MEDIUM 5.4 UPGRADE The Sharebar WordPress plugin through 1.4.1 does not have CSRF check in place when updating its settings, whic
CVE-2012-6719 CRITICAL 9.8 UPGRADE The sharebar plugin before 1.2.2 for WordPress has SQL injection.
CVE-2012-6718 MEDIUM 6.1 UPGRADE The sharebar plugin before 1.2.2 for WordPress has XSS, a different issue than CVE-2013-3491.

References

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