CVE-2023-27040: Simple Image Gallery v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the userna

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-27040 is a critical-severity flaw (CVSS 9.8) affecting simple image gallery web app. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Simple Image Gallery v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the username 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	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-74
Published	2023-03-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simple image gallery web app project

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

Am I affected?

Timeline

2023-03-16 16:15 UTCPublished CVE record published
2026-06-17 05:44 UTCUpdated Record last modified

simple image gallery web app project simple image gallery web app DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy simple-image-gallery-web-app || rpm -q simple-image-gallery-web-app || simple-image-gallery-web-app --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison simple-image-gallery-web-app sudo apt install simple-image-gallery-web-app=<VERSION_BEFORE_1.0> sudo apt-mark hold simple-image-gallery-web-app

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

dnf --showduplicates list simple-image-gallery-web-app sudo dnf downgrade simple-image-gallery-web-app-<VERSION_BEFORE_1.0> sudo dnf versionlock add simple-image-gallery-web-app

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-2023-27040?

simple image gallery web app: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-27040 being exploited?

CVE-2023-27040 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-2023-27040 affect?

CVE-2023-27040 affects simple image gallery web app. Severity is critical (CVSS 9.8). Simple Image Gallery v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the username parameter.

How urgent is CVE-2023-27040?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-38819 HIGH 8.8 MITIGATE A SQL injection vulnerability exits on the Simple Image Gallery System 1.0 application through "id" parameter

References

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