CVE-2024-46257: A Command injection vulnerability in requestLetsEncryptSslWithDnsChallenge in NginxProxyManager 2.11.3 allows

This month

MEDIUM 6.3WATCHLISTDOWNGRADE

CVE-2024-46257 is a medium-severity flaw (CVSS 6.3) affecting nginx proxy manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Command injection vulnerability in requestLetsEncryptSslWithDnsChallenge in NginxProxyManager 2.11.3 allows an attacker to achieve remote code execution via Add Let's Encrypt Certificate. NOTE: this is not part of any NGINX software shipped by F5.

Why this priority

Public exploit reference
On your watchlist

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-89
Published	2024-09-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jc21

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

Am I affected?

Timeline

2024-09-27 18:15 UTCPublished CVE record published
2026-06-17 07:55 UTCUpdated Record last modified

jc21 nginx proxy manager DOWNGRADE

Affected: 2.11.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.11.3

1. Check installed version

apt-cache policy nginx-proxy-manager || rpm -q nginx-proxy-manager || nginx-proxy-manager --version

2. No fixed release: DOWNGRADE to a release before 2.11.3 (Debian / Ubuntu)

apt-cache madison nginx-proxy-manager sudo apt install nginx-proxy-manager=<VERSION_BEFORE_2.11.3> sudo apt-mark hold nginx-proxy-manager

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

dnf --showduplicates list nginx-proxy-manager sudo dnf downgrade nginx-proxy-manager-<VERSION_BEFORE_2.11.3> sudo dnf versionlock add nginx-proxy-manager

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-2024-46257?

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

Is CVE-2024-46257 being exploited?

CVE-2024-46257 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-2024-46257 affect?

CVE-2024-46257 affects nginx proxy manager. Severity is medium (CVSS 6.3). A Command injection vulnerability in requestLetsEncryptSslWithDnsChallenge in NginxProxyManager 2.11.3 allows an attacker to achieve remote code execution via Add Let's Encrypt Certificate. NOTE: this is not part of any NGINX software shipp

How urgent is CVE-2024-46257?

Priority 50/100. Public exploit reference; On your watchlist

Software pages

nginx vulnerabilities · F5 BIG-IP vulnerabilities

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CVE-2025-50579 MEDIUM 5.3 DOWNGRADE A CORS misconfiguration in Nginx Proxy Manager v2.12.3 allows unauthorized domains to access sensitive data, p
CVE-2024-46256 CRITICAL 9.8 DOWNGRADE A Command injection vulnerability in requestLetsEncryptSsl in NginxProxyManager 2.11.3 allows an attacker to R
CVE-2024-39935 HIGH 8.8 UPGRADE jc21 NGINX Proxy Manager before 2.11.3 allows backend/internal/certificate.js OS command injection by an authe

References

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