CVE-2023-31579: Dromara Lamp-Cloud before v3.8.1 was discovered to use a hardcoded cryptographic key when creating and verifyi

Q: How do I fix CVE-2023-31579?

lamp-cloud: upgrade to 3.8.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-31579 being exploited?

CVE-2023-31579 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-2023-31579 affect?

CVE-2023-31579 affects lamp-cloud. Severity is critical (CVSS 9.8). Dromara Lamp-Cloud before v3.8.1 was discovered to use a hardcoded cryptographic key when creating and verifying a Json Web Token. This vulnerability allows attackers to authenticate to the application via a crafted JWT token.

Q: How urgent is CVE-2023-31579?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-31579 is a critical-severity flaw (CVSS 9.8) affecting lamp-cloud. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dromara Lamp-Cloud before v3.8.1 was discovered to use a hardcoded cryptographic key when creating and verifying a Json Web Token. This vulnerability allows attackers to authenticate to the application via a crafted JWT token.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-798
Published	2023-11-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tangyh

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

Am I affected?

Timeline

2023-11-02 22:15 UTCPublished CVE record published
2026-06-17 05:57 UTCUpdated Record last modified

tangyh lamp-cloud UPGRADE

Affected: < 3.8.1

Fixed in: 3.8.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lamp-cloud || rpm -q lamp-cloud || lamp-cloud --version

2. UPGRADE to 3.8.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lamp-cloud

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lamp-cloud

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-2023-31579?

lamp-cloud: upgrade to 3.8.1. Exact commands for each OS are on this page.

Is CVE-2023-31579 being exploited?

CVE-2023-31579 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-2023-31579 affect?

CVE-2023-31579 affects lamp-cloud. Severity is critical (CVSS 9.8). Dromara Lamp-Cloud before v3.8.1 was discovered to use a hardcoded cryptographic key when creating and verifying a Json Web Token. This vulnerability allows attackers to authenticate to the application via a crafted JWT token.

How urgent is CVE-2023-31579?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

References

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