CVE-2012-1903: XSS in Telligent Community 5.6.583.20496 via a flash file and related to the allowScriptAccess parameter.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2012-1903 is a medium-severity flaw (CVSS 5.4) affecting community. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XSS in Telligent Community 5.6.583.20496 via a flash file and related to the allowScriptAccess 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	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: telligent

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

Am I affected?

Timeline

2020-02-13 17:15 UTCPublished CVE record published
2026-06-16 23:40 UTCUpdated Record last modified

telligent community DOWNGRADE

Affected: 5.6.583.20496

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.6.583.20496

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.6.583.20496 (Debian / Ubuntu)

apt-cache madison community sudo apt install community=<VERSION_BEFORE_5.6.583.20496> sudo apt-mark hold community

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

dnf --showduplicates list community sudo dnf downgrade community-<VERSION_BEFORE_5.6.583.20496> sudo dnf versionlock add community

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-2012-1903?

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

Is CVE-2012-1903 being exploited?

CVE-2012-1903 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-2012-1903 affect?

CVE-2012-1903 affects community. Severity is medium (CVSS 5.4). XSS in Telligent Community 5.6.583.20496 via a flash file and related to the allowScriptAccess parameter.

How urgent is CVE-2012-1903?

Priority 35/100. Public exploit reference

Related CVEs

CVE-2020-29477 MEDIUM 4.8 DOWNGRADE Invision Community 4.5.4 is affected by cross-site scripting (XSS) in the Field Name field

References

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