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Not in CISA KEV
MEDIUM severity

OpenStack Glance Signature Verification BypassGHSA-wmhw-fvg9-87fc

MEDIUM

GHSA-wmhw-fvg9-87fc is a medium-severity (CVSS 5.5) CWE-310 vulnerability in glance. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2015-8234PYSEC-2017-143
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs70th percentile — riskier than 70% of all scored CVEsHighest risk
0.00%0.59%1.17%1.76%0.1%1.3%May 26Sep 26Nov 26

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
🐍glance

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

The image signature algorithm in OpenStack Glance 11.0.0 allows remote attackers to bypass the signature verification process via a crafted image, which triggers an MD5 collision.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐍PyPIglanceall versionsNo fix

Affected Products

1 product · 1 configurations
Application
glanceopenstack
1 version
11.0.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    The records we use list no patched version of glance for GHSA-wmhw-fvg9-87fc. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    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

The image signature algorithm in OpenStack Glance 11.0.0 allows remote attackers to bypass the signature verification process via a crafted image, which triggers an MD5 collision.
O3 Security · Impact-Aware SCA

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OpenStack Glance Signature Verification Bypass