CVE-2009-1035: Cross-site scripting (XSS) vulnerability in the Tasklist module 5.x-1.x before 5.x-1.3 and 5.x-2.x before 5.x-

Routine

MEDIUM 4.3DOWNGRADE

CVE-2009-1035 is a medium-severity flaw (CVSS 4.3) affecting tasks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Tasklist module 5.x-1.x before 5.x-1.3 and 5.x-2.x before 5.x-2.0-alpha1, a module for Drupal, allows remote authenticated users to inject arbitrary web script or HTML via Cascading Style Sheets (CSS).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2009-03-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: jake gordon

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

Am I affected?

Timeline

2009-03-20 18:30 UTCPublished CVE record published
2026-06-16 23:06 UTCUpdated Record last modified

jake gordon tasks DOWNGRADE

Affected: 5.x-1.0 · 5.x-1.2 · 5.x-2.x-dev

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.x-1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.x-1.0 (Debian / Ubuntu)

apt-cache madison tasks sudo apt install tasks=<VERSION_BEFORE_5.x-1.0> sudo apt-mark hold tasks

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

dnf --showduplicates list tasks sudo dnf downgrade tasks-<VERSION_BEFORE_5.x-1.0> sudo dnf versionlock add tasks

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-2009-1035?

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

Is CVE-2009-1035 being exploited?

CVE-2009-1035 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-2009-1035 affect?

CVE-2009-1035 affects tasks. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Tasklist module 5.x-1.x before 5.x-1.3 and 5.x-2.x before 5.x-2.0-alpha1, a module for Drupal, allows remote authenticated users to inject arbitrary web script or HTML via Cascading Style Shee

How urgent is CVE-2009-1035?

Priority 31/100. No elevated risk signals yet.

Software pages

Drupal vulnerabilities

Related CVEs

CVE-2022-39349 MEDIUM 5.5 UPGRADE The Tasks.org Android app is an open-source app for to-do lists and reminders
CVE-2020-22475 MEDIUM 6.8 UPGRADE "Tasks" application version before 9.7.3 is affected by insecure permissions

References

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