How severe is GHSA-762r-27w2-q22j?

No CVSS score has been assigned to GHSA-762r-27w2-q22j yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-762r-27w2-q22j?

GHSA-762r-27w2-q22j affects the following packages: avo (RubyGems). Ecosystems affected: RubyGems.

How do I fix GHSA-762r-27w2-q22j?

Update avo to 3.30.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-762r-27w2-q22j is resolved across your whole dependency graph.

How do I detect GHSA-762r-27w2-q22j in my RubyGems dependencies?

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

How do I mitigate GHSA-762r-27w2-q22j if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-762r-27w2-q22j actively exploited in the wild?

No public exploit code has been indexed for GHSA-762r-27w2-q22j 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 GHSA-762r-27w2-q22j?

GHSA-762r-27w2-q22j has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 19th 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 GHSA-762r-27w2-q22j?

GHSA-762r-27w2-q22j is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-762r-27w2-q22j published, and has it been updated?

GHSA-762r-27w2-q22j was published on March 18, 2026 and was last updated on March 25, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎 RubyGems

Not in CISA KEV

Avo has a XSS vulnerability on `return_to` paramGHSA-762r-27w2-q22j

Fix: avo-hq/avo#4330

GHSA-762r-27w2-q22j is a Cross-site Scripting (XSS) vulnerability in avo. A fix is available for avo — see the affected versions and patch details below.

Also known asCVE-2026-33209

Published

Mar 18, 2026

Updated

Mar 25, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

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 GHSA-762r-27w2-q22j.

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs19th percentile — riskier than 19% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

💎avo

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

Description

A reflected cross-site scripting (XSS) vulnerability exists in the return_to query parameter used in the avo interface.

An attacker can craft a malicious URL that injects arbitrary JavaScript, which is executed when he clicks a dynamically generated navigation button.

Impact

This vulnerability may allow execution of arbitrary JavaScript in the context of the application.

Impact varies depending on deployment:

In unauthenticated setups: exploitable via crafted links sent to users
In authenticated setups: limited to authenticated users and requires interaction

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`avo`	all versions	3.30.3`bundle update avo --conservative`

Affected Products

1 product · 1 configurations

Application

avoavohq

< 3.30.3

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for avo, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update avo to 3.30.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-762r-27w2-q22j is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

## Description A reflected cross-site scripting (XSS) vulnerability exists in the `return_to` query parameter used in the avo interface. An attacker can craft a malicious URL that injects arbitrary JavaScript, which is executed when he clicks a dynamically generated navigation button. ## Impact This vulnerability may allow execution of arbitrary JavaScript in the context of the application. Impact varies depending on deployment: - In unauthenticated setups: exploitable via crafted links sent to users - In authenticated setups: limited to authenticated users and requires interaction

O3 Security · Impact-Aware SCA

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Avo has a XSS vulnerability on `return_to` paramGHSA-762r-27w2-q22j

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

Real-World Exposure

Description

Description

Impact

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is GHSA-762r-27w2-q22j in your dependencies?