CVE-2015-0258: Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabti

Q: How do I fix CVE-2015-0258?

collabtive: upgrade to 2.1; debian linux: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2015-0258 being exploited?

CVE-2015-0258 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2015-0258 affect?

CVE-2015-0258 affects collabtive, debian linux, ubuntu linux. Severity is high (CVSS 8.8). Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabtive before 2.1 allow remote authenticated users to execute arbitrary code by uploading a file with a (1) .php3, (2) .php4, (3) .php

Q: How urgent is CVE-2015-0258?

Priority 63/100. High severity; Public exploit reference; On your watchlist

This week

HIGH 8.8WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2015-0258 is a high-severity flaw (CVSS 8.8) affecting collabtive, debian linux, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabtive before 2.1 allow remote authenticated users to execute arbitrary code by uploading a file with a (1) .php3, (2) .php4, (3) .php5, or (4) .phtml extension.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.8% (top 10%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-02-17
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: canonical · debian · o-dyn

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

Am I affected?

Timeline

2020-02-17 18:15 UTCPublished CVE record published
2026-06-17 00:19 UTCUpdated Record last modified

o-dyn collabtive UPGRADE

Affected: < 2.1

Fixed in: 2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade collabtive

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade collabtive

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 16.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2015-0258?

collabtive: upgrade to 2.1; debian linux: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-0258 being exploited?

CVE-2015-0258 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-2015-0258 affect?

CVE-2015-0258 affects collabtive, debian linux, ubuntu linux. Severity is high (CVSS 8.8). Multiple incomplete blacklist vulnerabilities in the avatar upload functionality in manageuser.php in Collabtive before 2.1 allow remote authenticated users to execute arbitrary code by uploading a file with a (1) .php3, (2) .php4, (3) .php

How urgent is CVE-2015-0258?

Priority 63/100. High severity; Public exploit reference; On your watchlist

Software pages

PHP vulnerabilities · Ubuntu vulnerabilities · Debian vulnerabilities

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CVE-2014-3247 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in Collabtive 1.2 allows remote authenticated users to inject arbitra
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References

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