CVE-2007-1111: Multiple cross-site scripting (XSS) vulnerabilities in ActiveCalendar 1.2.0 allow remote attackers to inject a

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MEDIUM 6.8DOWNGRADE

CVE-2007-1111 is a medium-severity flaw (CVSS 6.8) affecting activecalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in ActiveCalendar 1.2.0 allow remote attackers to inject arbitrary web script or HTML via the css parameter to (1) flatevents.php, (2) js.php, (3) mysqlevents.php, (4) m_2.php, (5) m_3.php, (6) m_4.php, (7) xmlevents.php, (8) y_2.php, or (9) y_3.php in data/.

Why this priority

EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	6.1% (top 7%)
CISA exploited list	No
Published	2007-02-26
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: activecalendar

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

Am I affected?

Timeline

2007-02-26 17:28 UTCPublished CVE record published
2026-06-16 22:36 UTCUpdated Record last modified

activecalendar activecalendar DOWNGRADE

Affected: 1.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.0 (Debian / Ubuntu)

apt-cache madison activecalendar sudo apt install activecalendar=<VERSION_BEFORE_1.2.0> sudo apt-mark hold activecalendar

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

dnf --showduplicates list activecalendar sudo dnf downgrade activecalendar-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add activecalendar

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: Active Calendar 1.2 - '/data/flatevents.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/js.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/mysqlevents.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/m_2.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/m_3.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/m_4.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/y_2.php?css' Cross-Site Scripting
Exploit-DB: Active Calendar 1.2 - '/data/y_3.php?css' Cross-Site Scripting

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-2007-1111?

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

Is CVE-2007-1111 being exploited?

CVE-2007-1111 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-2007-1111 affect?

CVE-2007-1111 affects activecalendar. Severity is medium (CVSS 6.8). Multiple cross-site scripting (XSS) vulnerabilities in ActiveCalendar 1.2.0 allow remote attackers to inject arbitrary web script or HTML via the css parameter to (1) flatevents.php, (2) js.php, (3) mysqlevents.php, (4) m_2.php, (5) m_3.php

How urgent is CVE-2007-1111?

Priority 52/100. EPSS top 7%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-1110 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in data/showcode.php in ActiveCalendar 1.2.0 allows remote attackers to read

References

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