CVE-2013-5027: Collabtive 1.0 has incorrect access control

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2013-5027 is a critical-severity flaw (CVSS 9.8) affecting collabtive. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Collabtive 1.0 has incorrect access control

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-269
Published	2019-12-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: o-dyn

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

Am I affected?

Timeline

2019-12-27 18:15 UTCPublished CVE record published
2026-06-16 23:58 UTCUpdated Record last modified

o-dyn collabtive DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison collabtive sudo apt install collabtive=<VERSION_BEFORE_1.0> sudo apt-mark hold collabtive

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

dnf --showduplicates list collabtive sudo dnf downgrade collabtive-<VERSION_BEFORE_1.0> sudo dnf versionlock add collabtive

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-2013-5027?

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

Is CVE-2013-5027 being exploited?

CVE-2013-5027 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-2013-5027 affect?

CVE-2013-5027 affects collabtive. Severity is critical (CVSS 9.8). Collabtive 1.0 has incorrect access control

How urgent is CVE-2013-5027?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-3298 MEDIUM 5.4 DOWNGRADE Collabtive 3.1 allows XSS when an authenticated user enters an XSS payload into the address section of the pro
CVE-2020-13655 MEDIUM 6.1 DOWNGRADE An issue was discovered in Collabtive 3.0 and later
CVE-2019-8935 MEDIUM 5.4 DOWNGRADE Collabtive 3.1 allows XSS via the manageuser.php?action=profile id parameter.
CVE-2015-0258 HIGH 8.8 UPGRADE MITIGATE Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabti
CVE-2014-3247 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in Collabtive 1.2 allows remote authenticated users to inject arbitra

References

← Back to latest CVEs