CVE-2026-3673: An authenticated attacker can store a crafted tag value in _user_tags and trigger JavaScript execution when a

Routine

MEDIUM 5.4DOWNGRADE

CVE-2026-3673 is a medium-severity flaw (CVSS 5.4) affecting frappe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An authenticated attacker can store a crafted tag value in _user_tags and trigger JavaScript execution when a victim opens the list/report view where tags are rendered. The vulnerable renderer interpolates tag content into HTML attributes and element content without escaping. This issue affects Frappe: 16.10.10.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-22
Last modified	2026-06-17

Publisher (CNA): Fluid Attacks · Vendor: frappe

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-22 20:16 UTCPublished CVE record published
2026-06-17 10:43 UTCUpdated Record last modified

frappe frappe DOWNGRADE

Affected: 16.10.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.10.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 16.10.10 (Debian / Ubuntu)

apt-cache madison frappe sudo apt install frappe=<VERSION_BEFORE_16.10.10> sudo apt-mark hold frappe

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

dnf --showduplicates list frappe sudo dnf downgrade frappe-<VERSION_BEFORE_16.10.10> sudo dnf versionlock add frappe

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-2026-3673?

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

Is CVE-2026-3673 being exploited?

CVE-2026-3673 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-2026-3673 affect?

CVE-2026-3673 affects frappe. Severity is medium (CVSS 5.4). An authenticated attacker can store a crafted tag value in _user_tags and trigger JavaScript execution when a victim opens the list/report view where tags are rendered. The vulnerable renderer interpolates tag content into HTML attributes a

How urgent is CVE-2026-3673?

Priority 26/100. Public exploit reference

Related CVEs

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CVE-2026-3837 MEDIUM 5.4 DOWNGRADE An authenticated attacker can persist crafted values in multiple field types and trigger client-side script ex
CVE-2026-35614 CRITICAL 9.8 UPGRADE Frappe is a full-stack web application framework

References

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