CVE-2008-6523: auth.php in openInvoice 0.90 beta and earlier allows remote attackers to bypass authentication and gain privil

This month

HIGH 7.5DOWNGRADE

CVE-2008-6523 is a high-severity flaw (CVSS 7.5) affecting openinvoice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

auth.php in openInvoice 0.90 beta and earlier allows remote attackers to bypass authentication and gain privileges by setting the oiauth cookie. NOTE: this can be leveraged with a separate vulnerability in resetpass.php to modify passwords for arbitrary users.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.6% (top 15%)
CISA exploited list	No
Weakness	CWE-287
Published	2009-03-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cale dunlap

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

Am I affected?

Timeline

2009-03-25 18:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

cale dunlap openinvoice DOWNGRADE

Affected: 0.90 beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.90

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.90 (Debian / Ubuntu)

apt-cache madison openinvoice sudo apt install openinvoice=<VERSION_BEFORE_0.90> sudo apt-mark hold openinvoice

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

dnf --showduplicates list openinvoice sudo dnf downgrade openinvoice-<VERSION_BEFORE_0.90> sudo dnf versionlock add openinvoice

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: OpenInvoice 0.9 - Arbitrary Change User Password

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-2008-6523?

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

Is CVE-2008-6523 being exploited?

CVE-2008-6523 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-2008-6523 affect?

CVE-2008-6523 affects openinvoice. Severity is high (CVSS 7.5). auth.php in openInvoice 0.90 beta and earlier allows remote attackers to bypass authentication and gain privileges by setting the oiauth cookie. NOTE: this can be leveraged with a separate vulnerability in resetpass.php to modify passwords

How urgent is CVE-2008-6523?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6524 MEDIUM 6.5 UPGRADE resetpass.php in openInvoice 0.90 beta and earlier allows remote authenticated users to change the passwords o

References

← Back to latest CVEs