CVE-2020-12764: Gnuteca 3.8 allows file.php?folder=/&file= Directory Traversal.

This week

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2020-12764 is a medium-severity flaw (CVSS 5.3) affecting gnuteca. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Gnuteca 3.8 allows file.php?folder=/&file= Directory Traversal.

Why this priority

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	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-22
Published	2020-05-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: solis

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

Am I affected?

Timeline

2020-05-09 19:15 UTCPublished CVE record published
2026-06-17 02:52 UTCUpdated Record last modified

solis gnuteca DOWNGRADE

Affected: 3.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.8 (Debian / Ubuntu)

apt-cache madison gnuteca sudo apt install gnuteca=<VERSION_BEFORE_3.8> sudo apt-mark hold gnuteca

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

dnf --showduplicates list gnuteca sudo dnf downgrade gnuteca-<VERSION_BEFORE_3.8> sudo dnf versionlock add gnuteca

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-2020-12764?

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

Is CVE-2020-12764 being exploited?

CVE-2020-12764 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-2020-12764 affect?

CVE-2020-12764 affects gnuteca. Severity is medium (CVSS 5.3). Gnuteca 3.8 allows file.php?folder=/&file= Directory Traversal.

How urgent is CVE-2020-12764?

Priority 46/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-12766 CRITICAL 9.8 DOWNGRADE Gnuteca 3.8 allows action=main:search:simpleSearch SQL Injection via the exemplaryStatusId parameter.

References

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