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HIGH severity

CVE-2022-26662 — trytond

HIGH

CVE-2022-26662 is a high-severity (CVSS 7.5) CWE-776 vulnerability in trytond. A fix is available for trytond — see the affected versions and patch details below.

XML Entity Expansion in trytond and proteus

Also known asGHSA-pm3h-mm62-pwm8PYSEC-2022-43171PYSEC-2026-3392PYSEC-2026-741
Published
Updated
Affected
6 pkgs
Patched
6 / 6
Exploits
None indexed
Exploitation data as of Sep 27, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs80th percentile — riskier than 80% of all scored CVEsHighest risk

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

How urgent is this, really

CVE-2022-26662 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

6 pkgs affected
🐍trytond🐍trytond🐍trytond🐍proteus🐍proteus🐍proteus

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

Description

An XML Entity Expansion (XEE) issue was discovered in Tryton Application Platform (Server) 5.x through 5.0.45, 6.x through 6.0.15, and 6.1.x and 6.2.x through 6.2.5, and Tryton Application Platform (Command Line Client (proteus)) 5.x through 5.0.11, 6.x through 6.0.4, and 6.1.x and 6.2.x through 6.2.1. An unauthenticated user can send a crafted XML-RPC message to consume all the resources of the server.

Affected Packages

6 total 6 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPItrytond≥ 5.0.0&&< 5.0.465.0.46pip install --upgrade 'trytond==5.0.46'
🐍PyPItrytond≥ 6.0.0&&< 6.0.166.0.16pip install --upgrade 'trytond==6.0.16'
🐍PyPItrytond≥ 6.1.0&&< 6.2.66.2.6pip install --upgrade 'trytond==6.2.6'
🐍PyPIproteus≥ 5.0.0&&< 5.0.125.0.12pip install --upgrade 'proteus==5.0.12'
🐍PyPIproteus≥ 6.0.0&&< 6.0.56.0.5pip install --upgrade 'proteus==6.0.5'
🐍PyPIproteus≥ 6.1.0&&< 6.2.26.2.2pip install --upgrade 'proteus==6.2.2'

Affected Products

3 products · 9 configurations
OS
debian linuxdebian
3 versions
9.010.011.0
Application
proteustryton
≥ 6.2.0 && < 6.2.2
range
Application
trytondtryton
≥ 6.2.0 && < 6.2.6
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update trytond to 5.0.46 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-26662 is resolved across your whole dependency graph.

  3. 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

An XML Entity Expansion (XEE) issue was discovered in Tryton Application Platform (Server) 5.x through 5.0.45, 6.x through 6.0.15, and 6.1.x and 6.2.x through 6.2.5, and Tryton Application Platform (Command Line Client (proteus)) 5.x through 5.0.11, 6.x through 6.0.4, and 6.1.x and 6.2.x through 6.2.1. An unauthenticated user can send a crafted XML-RPC message to consume all the resources of the server.
O3 Security · Impact-Aware SCA

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CVE-2022-26662: trytond — Fixed in 5.0.46