CVE-2017-7981: Tuleap before 9.7 allows command injection via the PhpWiki 1.3.10 SyntaxHighlighter plugin

Q: How do I fix CVE-2017-7981?

tuleap: upgrade to 9.7; phpwiki: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2017-7981 being exploited?

CVE-2017-7981 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-2017-7981 affect?

CVE-2017-7981 affects tuleap, phpwiki. Severity is high (CVSS 8.8). Tuleap before 9.7 allows command injection via the PhpWiki 1.3.10 SyntaxHighlighter plugin. This occurs in the Project Wiki component because the proc_open PHP function is used within PhpWiki before 1.5.5 with a syntax value in its first ar

Q: How urgent is CVE-2017-7981?

Priority 60/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

This week

HIGH 8.8UPGRADEDOWNGRADE

CVE-2017-7981 is a high-severity flaw (CVSS 8.8) affecting tuleap, phpwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tuleap before 9.7 allows command injection via the PhpWiki 1.3.10 SyntaxHighlighter plugin. This occurs in the Project Wiki component because the proc_open PHP function is used within PhpWiki before 1.5.5 with a syntax value in its first argument, and an authenticated Tuleap user can control this value, even with shell metacharacters, as demonstrated by a '<?plugin SyntaxHighlighter syntax="c;id"' line to execute the id command.

Why this priority

High severity
EPSS top 3%: very likely to be exploited
Public exploit reference

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	16.1% (top 3%)
CISA exploited list	No
Weakness	CWE-78
Published	2017-04-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: enalean · phpwiki project

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

Am I affected?

Timeline

2017-04-29 16:59 UTCPublished CVE record published
2026-06-17 01:25 UTCUpdated Record last modified

enalean tuleap UPGRADE

Affected: < 9.7

Fixed in: 9.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 9.7 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tuleap

Note

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

phpwiki project phpwiki DOWNGRADE

Affected: 1.3.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.10 (Debian / Ubuntu)

apt-cache madison phpwiki sudo apt install phpwiki=<VERSION_BEFORE_1.3.10> sudo apt-mark hold phpwiki

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

dnf --showduplicates list phpwiki sudo dnf downgrade phpwiki-<VERSION_BEFORE_1.3.10> sudo dnf versionlock add phpwiki

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Tuleap Project Wiki 8.3 < 9.6.99.86 - Command Injection

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-2017-7981?

tuleap: upgrade to 9.7; phpwiki: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-7981 being exploited?

CVE-2017-7981 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-2017-7981 affect?

CVE-2017-7981 affects tuleap, phpwiki. Severity is high (CVSS 8.8). Tuleap before 9.7 allows command injection via the PhpWiki 1.3.10 SyntaxHighlighter plugin. This occurs in the Project Wiki component because the proc_open PHP function is used within PhpWiki before 1.5.5 with a syntax value in its first ar

How urgent is CVE-2017-7981?

Priority 60/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

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References

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