CVE-2004-2776: go.cgi in GoScript 2.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the (

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2004-2776 is a critical-severity flaw (CVSS 9.8) affecting goscript. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

go.cgi in GoScript 2.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) query string or (2) artarchive parameter.

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	3.6% (top 11%)
CISA exploited list	No
Published	2019-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: goscript project

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

Am I affected?

Timeline

2019-12-31 20:15 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

goscript project goscript DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison goscript sudo apt install goscript=<VERSION_BEFORE_2.0> sudo apt-mark hold goscript

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

dnf --showduplicates list goscript sudo dnf downgrade goscript-<VERSION_BEFORE_2.0> sudo dnf versionlock add goscript

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-2004-2776?

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

Is CVE-2004-2776 being exploited?

CVE-2004-2776 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-2004-2776 affect?

CVE-2004-2776 affects goscript. Severity is critical (CVSS 9.8). go.cgi in GoScript 2.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) query string or (2) artarchive parameter.

How urgent is CVE-2004-2776?

Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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