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%, top 61% of all CVEs by exploit prediction. 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%CVSS: 5.3Exploit: Elevated riskExposed: 0

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
5.3(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

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
redhatflightctl-0:1.1.4-1.el9em2026-09-16redhat
redhatquay/quay-rhel8:17885943762026-09-10redhat
redhatquay/quay-rhel8:17885618412026-09-09redhat
redhatopenshift4/ose-console-rhel9:17883115202026-09-09redhat
redhatopenshift4/ose-console-rhel9:17883599342026-09-08redhat
redhatopenshift4/ose-console-rhel9:17883509632026-09-08redhat
redhatquay/quay-rhel8:17885955742026-09-08redhat
redhatquay/quay-rhel8:17881917552026-09-03redhat
redhatopenshift4/ose-console-rhel9:17877463822026-09-01redhat
redhatdevspaces/openvsx-rhel9:17877591452026-09-01redhat
redhatrhacm2/console-rhel9:17873392482026-08-26redhat
redhatrhacm2/console-rhel9:17873392492026-08-26redhat
redhatrhacm2/console-rhel9:17873351052026-08-26redhat
redhatrhacm2/console-rhel9:17876870622026-08-26redhat
redhatmulticluster-engine/console-mce-rhel9:17870793592026-08-25redhat
redhatmulticluster-engine/console-mce-rhel9:17872642502026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870764952026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870771082026-08-25redhat
redhatmulticluster-engine/console-mce-rhel9:17866688562026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870921982026-08-25redhat
redhatmulticluster-engine/console-mce-rhel9:17872590482026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17870922552026-08-25redhat
redhatopenshift-service-mesh/kiali-rhel9:17871656832026-08-25redhat
redhatrh-podman-desktop-0:1.1.2-1.el10_22026-08-20redhat
redhatrhacm2/console-rhel9:17869083612026-08-19redhat
redhatmulticluster-engine/console-mce-rhel9:17869119772026-08-19redhat
redhatansible-automation-platform/automation-portal:17870471882026-08-18redhat
redhatansible-automation-platform/automation-portal:17870471142026-08-18redhat
redhatdiscovery/discovery-ui-rhel9:17866348252026-08-13redhat
redhatpostcss2026-08-12redhat

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

(15)

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 16× in last 7d / 73× 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 128 total refreshes for this CVE.

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

Related CVEs(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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 61.5% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-69153, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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

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