CVE-2021-42651: A Server Side Template Injection (SSTI) vulnerability in Pentest-Collaboration-Framework v1.0.8 allows an auth

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HIGH 8.8DOWNGRADE

CVE-2021-42651 is a high-severity flaw (CVSS 8.8) affecting pentest collaboration framework. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Server Side Template Injection (SSTI) vulnerability in Pentest-Collaboration-Framework v1.0.8 allows an authenticated remote attacker to execute arbitrary code through /project/PROJECTNAME/reports/.

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-94
Published	2022-05-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pentest collaboration framework project

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

Am I affected?

Timeline

2022-05-11 15:15 UTCPublished CVE record published
2026-06-17 04:09 UTCUpdated Record last modified

pentest collaboration framework project pentest collaboration framework DOWNGRADE

Affected: 1.0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.8

1. Check installed version

apt-cache policy pentest-collaboration-framework || rpm -q pentest-collaboration-framework || pentest-collaboration-framework --version

2. No fixed release: DOWNGRADE to a release before 1.0.8 (Debian / Ubuntu)

apt-cache madison pentest-collaboration-framework sudo apt install pentest-collaboration-framework=<VERSION_BEFORE_1.0.8> sudo apt-mark hold pentest-collaboration-framework

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

dnf --showduplicates list pentest-collaboration-framework sudo dnf downgrade pentest-collaboration-framework-<VERSION_BEFORE_1.0.8> sudo dnf versionlock add pentest-collaboration-framework

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-2021-42651?

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

Is CVE-2021-42651 being exploited?

CVE-2021-42651 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-2021-42651 affect?

CVE-2021-42651 affects pentest collaboration framework. Severity is high (CVSS 8.8). A Server Side Template Injection (SSTI) vulnerability in Pentest-Collaboration-Framework v1.0.8 allows an authenticated remote attacker to execute arbitrary code through /project/PROJECTNAME/reports/.

How urgent is CVE-2021-42651?

Priority 50/100. High severity

References

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