CVE-2026-69153

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.5% (36th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — Patch released this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity53% × 45%
Exploitation40% × 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
0.5%
EPSS %ILE
36th
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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 3, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 3, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

8.5.19

Patch available: postcss/postcss 8.5.19

https://github.com/postcss/postcss/releases/tag/8.5.19
github_commit Patch Available

commit 7beca139e70f (postcss/postcss)

Patch available: postcss/postcss 8.5.23 (contains commit 7beca139e70f)

https://github.com/postcss/postcss/commit/7beca139e70f9075c6b19700fcb00dd8033e5da8
github Patch Available🟡 PoC Available

PostCSS: incomplete fix of GHSA-6g55-p6wh-862q — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset · Advisory · postcss/postcss · GitHub

https://github.com/postcss/postcss/security/advisories/GHSA-fxqj-rqcc-2cmp

Vendor Advisories for CVE-2026-69153(20)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-console-rhel9:17894537272026-09-24redhat
redhatautomation-platform-ui-0:2.6.14-1.el9ap2026-09-23redhat
redhatansible-automation-platform-26/gateway-rhel9:17896664722026-09-23redhat
redhatautomation-gateway-0:2.5.20260923-1.el9ap2026-09-23redhat
redhatquay/quay-rhel8:17885938432026-09-22redhat
redhatdevspaces/dashboard-rhel9:17891628842026-09-17redhat
redhatopenshift4/ose-console-rhel9:17888059262026-09-17redhat
redhatflightctl-0:1.1.4-1.el9em2026-09-16redhat
redhatansible-automation-platform-27/gateway-rhel9:17889185102026-09-14redhat
redhatquay/quay-rhel8:17885943762026-09-10redhat
redhatquay/quay-rhel8:17885618412026-09-09redhat
redhatopenshift4/ose-console-rhel9:17883115202026-09-09redhat
redhatquay/quay-rhel8:17885955742026-09-08redhat
redhatopenshift4/ose-console-rhel9:17883599342026-09-08redhat
redhatopenshift4/ose-console-rhel9:17883509632026-09-08redhat
redhatquay/quay-rhel8:17881917552026-09-03redhat
redhatopenshift4/ose-console-rhel9:17877463822026-09-01redhat
redhatdevspaces/openvsx-rhel9:17877591452026-09-01redhat
redhatrhacm2/console-rhel9:17873351052026-08-26redhat
redhatrhacm2/console-rhel9:17873392482026-08-26redhat
redhatrhacm2/console-rhel9:17876870622026-08-26redhat
redhatrhacm2/console-rhel9:17873392492026-08-26redhat
redhatmulticluster-engine/console-mce-rhel9:17866688562026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870922552026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17871656832026-08-25redhat
redhatmulticluster-engine/console-mce-rhel9:17870793592026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870764952026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870771082026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870921982026-08-25redhat
redhatmulticluster-engine/console-mce-rhel9:17872590482026-08-25redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.2.1+~cs5.3.23-8 ... 8.5.9+~cs9.3.30-1 (31 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.4.20+~cs8.0.23-1 ... 8.5.9+~cs9.3.30-1 (18 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.4.49+~cs9.2.32-1 ... 8.5.9+~cs9.3.30-1 (14 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-postcss8.4.49+~cs9.2.32-1 ... 8.5.9+~cs9.3.30-1 (11 versions)8.5.23+~cs10.2.23-1—
npm(1)
PackageVulnerable rangeFixed inDependents
postcss—8.5.23—

Weakness Classification(2)

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

Additional Vendor Advisories

(23)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 68× 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.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-09-29 06:39 UTCEG score recompute
  2. 2026-09-29 06:39 UTCVendor advisory
  3. 2026-09-28 13:52 UTCEPSS rescore
  4. 2026-09-27 18:15 UTCEG score recompute
  5. 2026-09-27 18:15 UTCVendor advisory
  6. 2026-09-27 13:48 UTCEPSS rescore
  7. 2026-09-26 15:59 UTCEPSS rescore
  8. 2026-09-25 04:46 UTCEG score recompute
  9. 2026-09-25 04:46 UTCVendor advisory
  10. 2026-09-24 03:01 UTCEG score recompute
  11. 2026-09-24 03:01 UTCVendor advisory
  12. 2026-09-23 17:54 UTCEPSS rescore
  13. 2026-09-23 04:02 UTCEG score recompute
  14. 2026-09-23 04:02 UTCVendor advisory
  15. 2026-09-22 05:03 UTCEG score recompute
  16. 2026-09-22 05:03 UTCVendor advisory
  17. 2026-09-21 21:09 UTCEPSS rescore
  18. 2026-09-20 20:16 UTCEPSS rescore
  19. 2026-09-20 03:25 UTCEG score recompute
  20. 2026-09-20 03:25 UTCVendor advisory
  21. 2026-09-19 03:44 UTCEG score recompute
  22. 2026-09-19 03:44 UTCVendor advisory
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 03:18 UTCEG score recompute
  25. 2026-09-18 03:18 UTCVendor advisory
Show 75 more
  1. 2026-09-17 04:18 UTCEG score recompute
  2. 2026-09-17 04:18 UTCVendor advisory
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:18 UTCEG score recompute
  5. 2026-09-16 05:18 UTCVendor advisory
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-15 01:52 UTCVendor advisory
  8. 2026-09-14 01:49 UTCEG score recompute
  9. 2026-09-14 01:49 UTCVendor advisory
  10. 2026-09-13 02:50 UTCEG score recompute
  11. 2026-09-13 02:50 UTCVendor advisory
  12. 2026-09-12 03:50 UTCEG score recompute
  13. 2026-09-12 03:50 UTCVendor advisory
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 09:37 UTCEPSS rescore
  16. 2026-09-11 04:48 UTCEG score recompute
  17. 2026-09-11 04:48 UTCVendor advisory
  18. 2026-09-10 05:44 UTCVendor advisory
  19. 2026-09-09 06:45 UTCEG score recompute
  20. 2026-09-09 06:45 UTCVendor advisory
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-07 18:52 UTCEG score recompute
  23. 2026-09-07 18:52 UTCVendor advisory
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-06 13:47 UTCEPSS rescore
  26. 2026-09-06 08:21 UTCEG score recompute
  27. 2026-09-06 08:21 UTCVendor advisory
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 09:16 UTCEG score recompute
  30. 2026-09-05 09:16 UTCVendor advisory
  31. 2026-09-04 10:16 UTCEG score recompute
  32. 2026-09-04 10:16 UTCVendor advisory
  33. 2026-09-04 05:07 UTCEPSS rescore
  34. 2026-09-03 08:44 UTCEG score recompute
  35. 2026-09-03 08:44 UTCVendor advisory
  36. 2026-09-02 14:12 UTCEPSS rescore
  37. 2026-09-01 22:16 UTCEG score recompute
  38. 2026-09-01 22:16 UTCVendor advisory
  39. 2026-09-01 13:54 UTCEPSS rescore
  40. 2026-09-01 04:40 UTCEPSS rescore
  41. 2026-08-31 23:11 UTCVendor advisory
  42. 2026-08-30 21:00 UTCEG score recompute
  43. 2026-08-30 21:00 UTCVendor advisory
  44. 2026-08-30 19:17 UTCEPSS rescore
  45. 2026-08-30 01:22 UTCEPSS rescore
  46. 2026-08-29 22:00 UTCEG score recompute
  47. 2026-08-29 22:00 UTCVendor advisory
  48. 2026-08-28 21:42 UTCEPSS rescore
  49. 2026-08-27 20:02 UTCEG score recompute
  50. 2026-08-27 20:02 UTCVendor advisory
  51. 2026-08-26 19:11 UTCEG score recompute
  52. 2026-08-26 19:11 UTCVendor advisory
  53. 2026-08-26 14:47 UTCEPSS rescore
  54. 2026-08-25 18:17 UTCEG score recompute
  55. 2026-08-25 18:17 UTCVendor advisory
  56. 2026-08-25 13:49 UTCEPSS rescore
  57. 2026-08-24 19:18 UTCEG score recompute
  58. 2026-08-24 19:18 UTCVendor advisory
  59. 2026-08-23 20:18 UTCEG score recompute
  60. 2026-08-23 20:18 UTCVendor advisory
  61. 2026-08-23 00:19 UTCEPSS rescore
  62. 2026-08-22 21:19 UTCEG score recompute
  63. 2026-08-22 21:19 UTCVendor advisory
  64. 2026-08-21 23:49 UTCEPSS rescore
  65. 2026-08-21 22:13 UTCVendor advisory
  66. 2026-08-20 23:09 UTCEG score recompute
  67. 2026-08-20 23:09 UTCVendor advisory
  68. 2026-08-20 22:56 UTCEPSS rescore
  69. 2026-08-20 00:10 UTCEG score recompute
  70. 2026-08-20 00:10 UTCVendor advisory
  71. 2026-08-19 17:04 UTCEPSS rescore
  72. 2026-08-19 01:09 UTCEG score recompute
  73. 2026-08-19 01:09 UTCVendor advisory
  74. 2026-08-18 13:49 UTCEPSS rescore
  75. 2026-08-18 13:49 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-69153?
CVE-2026-69153 is a medium vulnerability published on August 3, 2026. PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal…
When was CVE-2026-69153 disclosed?
CVE-2026-69153 was first published on August 3, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-69153 actively exploited?
CVE-2026-69153 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-69153?
CVE-2026-69153 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-69153?
A fix for CVE-2026-69153 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-69153 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-69153

Explore →

Is Your Infrastructure Affected by CVE-2026-69153?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs