CVE-2008-5738: Nodstrum MySQL Calendar 1.1 and 1.2 allows remote attackers to bypass authentication and gain administrative a

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HIGH 7.5WATCHLISTDOWNGRADE

CVE-2008-5738 is a high-severity flaw (CVSS 7.5) affecting mysql calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nodstrum MySQL Calendar 1.1 and 1.2 allows remote attackers to bypass authentication and gain administrative access by setting the nodstrumCalendarV2 cookie to 1. NOTE: some of these details are obtained from third party information.

Why this priority

High severity
Public exploit reference
On your watchlist

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-264
Published	2008-12-26
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: nodstrum

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

Am I affected?

Timeline

2008-12-26 18:30 UTCPublished CVE record published
2026-06-16 23:00 UTCUpdated Record last modified

nodstrum mysql calendar DOWNGRADE

Affected: 1.1 · 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy mysql-calendar || rpm -q mysql-calendar || mysql-calendar --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison mysql-calendar sudo apt install mysql-calendar=<VERSION_BEFORE_1.1> sudo apt-mark hold mysql-calendar

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

dnf --showduplicates list mysql-calendar sudo dnf downgrade mysql-calendar-<VERSION_BEFORE_1.1> sudo dnf versionlock add mysql-calendar

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: Calendar Script 1.1 - Insecure Cookie Handling

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-2008-5738?

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

Is CVE-2008-5738 being exploited?

CVE-2008-5738 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-2008-5738 affect?

CVE-2008-5738 affects mysql calendar. Severity is high (CVSS 7.5). Nodstrum MySQL Calendar 1.1 and 1.2 allows remote attackers to bypass authentication and gain administrative access by setting the nodstrumCalendarV2 cookie to 1. NOTE: some of these details are obtained from third party information.

How urgent is CVE-2008-5738?

Priority 58/100. High severity; Public exploit reference; On your watchlist

Software pages

MySQL vulnerabilities

Related CVEs

CVE-2008-5737 HIGH 7.5 DOWNGRADE SQL injection vulnerability in index.php in Nodstrum MySQL Calendar 1.1 and 1.2 allows remote attackers to exe

References

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