CVE-2026-95521

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-24. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A command injection flaw was found in rpm. Installing or rebuilding a source RPM whose source or spec file basenames contain a %() macro construct causes rpm to execute an attacker-controlled shell command via popen() while relocating the source file list. This allows arbitrary command execution as the invoking (typically non-root) user, simply by installing, rebuilding, or otherwise processing an untrusted .src.rpm.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
35
EG Risk 35/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 24, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Sep 24, 2026
Patch available. Sources: redhat.
redhat

2537812 – (CVE-2026-95521) CVE-2026-95521 rpm: rpm: shell command injection via macro expansion of source/spec file basenames when installing a source RPM

https://bugzilla.redhat.com/show_bug.cgi?id=2537812
redhat Patch Available

CVE-2026-95521 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-95521

Vendor Advisories for CVE-2026-95521(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 35× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 05:21 UTCVendor advisory
  2. 2026-10-04 05:21 UTCGHSA enrichment
  3. 2026-10-03 17:35 UTCEG score recompute
  4. 2026-10-03 17:35 UTCVendor advisory
  5. 2026-10-03 17:35 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 05:49 UTCEG score recompute
  8. 2026-10-03 05:49 UTCVendor advisory
  9. 2026-10-03 05:49 UTCGHSA enrichment
  10. 2026-10-02 17:57 UTCEPSS rescore
  11. 2026-10-02 17:55 UTCVendor advisory
  12. 2026-10-02 17:55 UTCGHSA enrichment
  13. 2026-10-02 06:09 UTCEG score recompute
  14. 2026-10-02 06:09 UTCVendor advisory
  15. 2026-10-02 06:09 UTCGHSA enrichment
  16. 2026-10-01 19:51 UTCEPSS rescore
  17. 2026-10-01 18:23 UTCVendor advisory
  18. 2026-10-01 18:23 UTCGHSA enrichment
  19. 2026-10-01 06:34 UTCGHSA enrichment
  20. 2026-09-30 18:48 UTCEG score recompute
  21. 2026-09-30 18:48 UTCGHSA enrichment
  22. 2026-09-30 15:04 UTCEPSS rescore
  23. 2026-09-30 07:00 UTCGHSA enrichment
  24. 2026-09-29 19:13 UTCEG score recompute
  25. 2026-09-29 19:13 UTCGHSA enrichment
Show 25 more
  1. 2026-09-29 07:21 UTCEG score recompute
  2. 2026-09-29 07:21 UTCGHSA enrichment
  3. 2026-09-28 19:35 UTCEG score recompute
  4. 2026-09-28 19:35 UTCGHSA enrichment
  5. 2026-09-28 13:52 UTCEPSS rescore
  6. 2026-09-28 13:52 UTCEPSS rescore
  7. 2026-09-28 07:36 UTCGHSA enrichment
  8. 2026-09-27 19:50 UTCEG score recompute
  9. 2026-09-27 19:50 UTCGHSA enrichment
  10. 2026-09-27 13:49 UTCEPSS rescore
  11. 2026-09-27 08:03 UTCGHSA enrichment
  12. 2026-09-26 20:18 UTCEG score recompute
  13. 2026-09-26 20:18 UTCGHSA enrichment
  14. 2026-09-26 15:59 UTCEPSS rescore
  15. 2026-09-26 08:32 UTCEG score recompute
  16. 2026-09-26 08:31 UTCGHSA enrichment
  17. 2026-09-25 20:40 UTCGHSA enrichment
  18. 2026-09-25 08:47 UTCGHSA enrichment
  19. 2026-09-24 21:01 UTCGHSA enrichment
  20. 2026-09-24 16:36 UTCEG score recompute
  21. 2026-09-24 16:36 UTCGHSA enrichment
  22. 2026-09-24 15:17 UTCEG score recompute
  23. 2026-09-24 14:33 UTCEG score recompute
  24. 2026-09-24 13:39 UTCEG score recompute
  25. 2026-09-24 13:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-95521?
CVE-2026-95521 is a high vulnerability published on September 24, 2026. A command injection flaw was found in rpm. Installing or rebuilding a source RPM whose source or spec file basenames contain a %() macro construct causes rpm to execute an attacker-controlled shell command via popen() while relocating the source file list. This allows arbitrary command execution as…
When was CVE-2026-95521 disclosed?
CVE-2026-95521 was first published on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-95521 actively exploited?
CVE-2026-95521 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-95521?
CVE-2026-95521 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-95521?
A fix for CVE-2026-95521 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-95521 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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