RHSA-2026:34854
Vulnerability from csaf_redhat - Published: 2026-07-02 08:56 - Updated: 2026-09-06 05:29Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
composer:
* composer-2.10.2-1.hum1 (noarch)
* composer-2.10.2-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Composer, a dependency manager for PHP. A malicious package can exploit a vulnerability in Composer's binary installation process by using specially crafted path segments. This allows an existing file on the host system to have its permissions changed to be world-readable and world-executable. This can lead to sensitive information disclosure and potentially allow an attacker to execute arbitrary code.
5.6 (Medium)
Affected products
Threats
Impact
Moderate
References
14 references
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"vulnerabilities": [
{
"cve": "CVE-2026-59946",
"cwe": {
"id": "CWE-279",
"name": "Incorrect Execution-Assigned Permissions"
},
"discovery_date": "2026-07-08T20:01:11.154736+00:00",
"ids": [
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"text": "2498194"
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{
"category": "description",
"text": "A flaw was found in Composer, a dependency manager for PHP. A malicious package can exploit a vulnerability in Composer\u0027s binary installation process by using specially crafted path segments. This allows an existing file on the host system to have its permissions changed to be world-readable and world-executable. This can lead to sensitive information disclosure and potentially allow an attacker to execute arbitrary code.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "composer: Composer: Insecure file permissions leading to information disclosure and potential execution",
"title": "Vulnerability summary"
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{
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"text": "Red Hat ships Composer version 2.10.2 in its products, which already includes the fix for this issue. Community distributions have been notified.",
"title": "Statement"
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{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"Red Hat Hardened Images:composer-main@src"
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},
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"url": "https://github.com/composer/composer/security/advisories/GHSA-gjfg-22fp-rrxx"
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"release_date": "2026-07-08T19:32:38.089000+00:00",
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{
"category": "vendor_fix",
"date": "2026-07-02T08:56:58+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:composer-main@noarch",
"Red Hat Hardened Images:composer-main@src"
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"url": "https://access.redhat.com/errata/RHSA-2026:34854"
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:composer-main@noarch",
"Red Hat Hardened Images:composer-main@src"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "composer: Composer: Insecure file permissions leading to information disclosure and potential execution"
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]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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