CVE-2026-55809: Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Flag at

Q: How do I fix CVE-2026-55809?

flag attendance field: upgrade to 1.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-55809 being exploited?

CVE-2026-55809 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-2026-55809 affect?

CVE-2026-55809 affects flag attendance field. Severity is high (CVSS 8.1). Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Flag attendance field allows Object Injection. This issue affects Flag attendance field versions: from 0.0.0 to 1.2.

Routine

HIGH 8.1UPGRADE

CVE-2026-55809 is a high-severity flaw (CVSS 8.1) affecting flag attendance field. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Flag attendance field allows Object Injection. This issue affects Flag attendance field versions: from 0.0.0 to 1.2.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-915
Published	2026-07-10
Last modified	2026-10-25

Publisher (CNA): Drupal.org · Vendor: flag attendance field project

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-10 22:16 UTCPublished CVE record published
2026-10-25 15:10 UTCUpdated Record last modified

flag attendance field project flag attendance field UPGRADE

Affected: < 1.2

Fixed in: 1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flag-attendance-field || rpm -q flag-attendance-field || flag-attendance-field --version

2. UPGRADE to 1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flag-attendance-field

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flag-attendance-field

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-2026-55809?

flag attendance field: upgrade to 1.2. Exact commands for each OS are on this page.

Is CVE-2026-55809 being exploited?

CVE-2026-55809 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-2026-55809 affect?

CVE-2026-55809 affects flag attendance field. Severity is high (CVSS 8.1). Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Flag attendance field allows Object Injection. This issue affects Flag attendance field versions: from 0.0.0 to 1.2.

How urgent is CVE-2026-55809?

Priority 38/100. High severity

Software pages

Drupal vulnerabilities

References

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