CVE-2026-17978

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
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: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Side-channel information leakage in WebCodecs in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)

CVSS v3
5.3
Vendor severity
LOWper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Low)
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 3, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/519610845
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html

Vendor Advisories for CVE-2026-17978(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (500 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium113.0.5672.126-1 ... 151.0.7922.47-1 (394 versions)151.0.7922.71-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb12u1 (160 versions)151.0.7922.71-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 152.0.7977.64-1 (177 versions)——

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 26× in last 7d / 98× 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 177 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-17978?
CVE-2026-17978 is a medium vulnerability published on July 30, 2026. Side-channel information leakage in WebCodecs in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)
When was CVE-2026-17978 disclosed?
CVE-2026-17978 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17978 actively exploited?
CVE-2026-17978 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 88.3% of all scored CVEs.
What is the CVSS score of CVE-2026-17978?
CVE-2026-17978 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17978?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17978, 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-2026-17978

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