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CVE-2026-85518

Openscap: openscap: arbitrary file write via path traversal in source datastream decomposition

CVSS score

6.1

EPSS probability

—

Risk score

0.6

Published

2 h ago

Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

OpenSCAP Path Traversal Vulnerability in Source DataStream Decomposition

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A flaw exists in OpenSCAP due to improper validation of relative file path attributes during Source DataStream (SDS) file decomposition [S0]. This vulnerability allows an attacker to create or modify files without authorization by tricking a user or automated system into decomposing a crafted datastream [S0].

Why does it matter?

It compromises system integrity by allowing unauthorized file writing or modification outside the intended target directory with the permissions of the executing process [S0].

What should be done?

  • Follow the vendor advisory [S0].
Chain of evidence and sources2 verified claims

OpenSCAP uygulamasının Kaynak Veri Akışı dosyalarını ayrıştırırken göreceli dosya yollarını doğrulamaması yol atlama zafiyetine yol açar [S0].

Başarılı istismar, yürütülen sürecin izinleriyle hedef dizin dışında dosya oluşturulmasına veya değiştirilmesine imkân tanır [S0].

Show the technical text from the sources

A flaw was found in OpenSCAP. When decomposing a Source DataStream (SDS) file, the application does not properly validate relative file path attributes, leading to a path traversal vulnerability. An attacker can exploit this flaw by tricking a user or automated system into decomposing a crafted datastream containing directory traversal sequences. Successful exploitation allows unauthorized file creation or modification outside the intended target directory with the permissions of the executing process.

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

CWE: CWE-22

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-85518 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Red HatRed Hat Enterprise Linux 10 View
2Red HatRed Hat Enterprise Linux 6 View
3Red HatRed Hat Enterprise Linux 7 View
4Red HatRed Hat Enterprise Linux 8 View
5Red HatRed Hat Enterprise Linux 9 View
6Red HatRed Hat Hardened Images View
Total affected vendors: 1|Products: 6

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.1CVSS V3_1MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:LCVE CNA
6.1CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:LNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-85518 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-85518 weaknesses.

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

CVSS Vector Radar Chart

6.1 / 10
Attack VectorLocalComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityHighAvailabilityLow

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)High
Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

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Weakness Type (CWE & CAPEC)

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CVE-2026-85518 · Openscap: openscap: arbitrary file write…