CVE-2026-33081: PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser

Q: How do I fix CVE-2026-33081?

pinchtab: upgrade to 0.8.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-33081 being exploited?

CVE-2026-33081 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-2026-33081 affect?

CVE-2026-33081 affects pinchtab. Severity is medium (CVSS 5.8). PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. Versions 0.8.2 and below have a Blind SSRF vulnerability in the /download endpoint. The validateDownloadURL() function only checks the initial u

Q: How urgent is CVE-2026-33081?

Priority 36/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.8REMOTEUPGRADE

CVE-2026-33081 is a medium-severity flaw (CVSS 5.8) affecting pinchtab. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. Versions 0.8.2 and below have a Blind SSRF vulnerability in the /download endpoint. The validateDownloadURL() function only checks the initial user-supplied URL, but the embedded Chromium browser can follow attacker-controlled redirects/navigations to internal network addresses after validation. Exploitation requires security.allowDownload=true (disabl

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-03-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: pinchtab

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

Am I affected?

Timeline

2026-03-20 10:16 UTCPublished CVE record published
2026-06-17 10:36 UTCUpdated Record last modified

pinchtab pinchtab UPGRADE

Affected: < 0.8.3

Fixed in: 0.8.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.8.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pinchtab

Note

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

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-2026-33081?

pinchtab: upgrade to 0.8.3. Exact commands for each OS are on this page.

Is CVE-2026-33081 being exploited?

CVE-2026-33081 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-2026-33081 affect?

CVE-2026-33081 affects pinchtab. Severity is medium (CVSS 5.8). PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. Versions 0.8.2 and below have a Blind SSRF vulnerability in the /download endpoint. The validateDownloadURL() function only checks the initial u

How urgent is CVE-2026-33081?

Priority 36/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

Related CVEs

CVE-2026-33623 MEDIUM 6.7 UPGRADE PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser
CVE-2026-33622 HIGH 8.8 UPGRADE PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser
CVE-2026-33621 MEDIUM 4.8 UPGRADE PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser
CVE-2026-33620 MEDIUM 4.3 UPGRADE PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser
CVE-2026-33619 MEDIUM 4.1 UPGRADE PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser

References

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