How severe is CVE-2023-41336?

CVE-2023-41336 has a CVSS score of 6.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2023-41336?

CVE-2023-41336 affects the following packages: symfony/ux-autocomplete (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2023-41336?

Update symfony/ux-autocomplete to 2.11.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-41336 is resolved across your whole dependency graph.

How do I detect CVE-2023-41336 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for symfony/ux-autocomplete, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2023-41336 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2023-41336 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-41336 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2023-41336?

CVE-2023-41336 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 51th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2023-41336?

CVE-2023-41336 is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2023-41336 published, and has it been updated?

CVE-2023-41336 was published on September 11, 2023 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

CVE-2023-41336 — ux-autocomplete

MEDIUMFix: symfony/ux-autocomplete@fabcb2e

CVE-2023-41336 is a medium-severity (CVSS 6.5) Improper Input Validation vulnerability in symfony/ux-autocomplete. A fix is available for symfony/ux-autocomplete — see the affected versions and patch details below.

Prevent injection of invalid entity ids for "autocomplete" fields in symfony ux-autocomplete

Also known asGHSA-4cpv-669c-r79x

Published

Sep 11, 2023

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-41336.

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs51th percentile — riskier than 51% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐘symfony/ux-autocomplete

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Under certain circumstances, an attacker could successfully submit an entity id for an EntityType that is not part of the valid choices.

Affected applications are any that use:

A custom query_builder option to limit the valid results; AND
An EntityType with 'autocomplete' => true or a custom AsEntityAutocompleteField.

Under this circumstance, if an id is submitted, it is accepted even if the matching record would not be returned by the custom query built with query_builder.

Patches

The problem has been fixed in symfony/ux-autocomplete version 2.11.2.

Workarounds

Upgrade to version 2.11.2 or greater of symfony/ux-autocomplete or perform extra validation after submit to verify the selected option is valid.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`symfony/ux-autocomplete`	all versions	2.11.2`composer require symfony/ux-autocomplete:^2.11.2`

Affected Products

1 product · 1 configurations

Application

ux autocompletesymfony

< 2.11.2

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for symfony/ux-autocomplete, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update symfony/ux-autocomplete to 2.11.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-41336 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact Under certain circumstances, an attacker could successfully submit an entity id for an `EntityType` that is *not* part of the valid choices. Affected applications are any that use: * A custom `query_builder` option to limit the valid results; AND * An `EntityType` with `'autocomplete' => true` or a custom [AsEntityAutocompleteField](https://symfony.com/bundles/ux-autocomplete/current/index.html#usage-in-a-form-with-ajax). Under this circumstance, if an id is submitted, it is accepted even if the matching record would not be returned by the custom query built with `query_builder`.