CVE-2026-17978

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH 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(high)
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
11%
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 ... 151.0.7922.71-1~deb13u1 (162 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 / 99× 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. 2026-08-26 01:44 UTCEG score recompute
  2. 2026-08-26 01:44 UTCVendor advisory
  3. 2026-08-26 01:44 UTCGHSA enrichment
  4. 2026-08-25 13:48 UTCEPSS rescore
  5. 2026-08-25 02:27 UTCEG score recompute
  6. 2026-08-25 02:27 UTCGHSA enrichment
  7. 2026-08-24 03:10 UTCVendor advisory
  8. 2026-08-24 03:09 UTCGHSA enrichment
  9. 2026-08-23 03:36 UTCEG score recompute
  10. 2026-08-23 03:36 UTCVendor advisory
  11. 2026-08-23 03:36 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 04:18 UTCEG score recompute
  14. 2026-08-22 04:18 UTCVendor advisory
  15. 2026-08-22 04:18 UTCGHSA enrichment
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-21 05:01 UTCEG score recompute
  18. 2026-08-21 05:01 UTCVendor advisory
  19. 2026-08-21 05:01 UTCGHSA enrichment
  20. 2026-08-20 22:55 UTCEPSS rescore
  21. 2026-08-20 05:44 UTCEG score recompute
  22. 2026-08-20 05:44 UTCGHSA enrichment
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-19 06:26 UTCEG score recompute
  25. 2026-08-19 06:26 UTCVendor advisory
Show 74 more
  1. 2026-08-19 06:25 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-18 06:50 UTCEG score recompute
  4. 2026-08-18 06:50 UTCGHSA enrichment
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 07:30 UTCEG score recompute
  7. 2026-08-17 07:30 UTCVendor advisory
  8. 2026-08-17 07:30 UTCGHSA enrichment
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 08:13 UTCEG score recompute
  11. 2026-08-16 08:13 UTCVendor advisory
  12. 2026-08-16 08:13 UTCGHSA enrichment
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 08:56 UTCVendor advisory
  15. 2026-08-15 08:56 UTCGHSA enrichment
  16. 2026-08-14 09:38 UTCEG score recompute
  17. 2026-08-14 09:38 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 10:21 UTCEG score recompute
  20. 2026-08-13 10:21 UTCVendor advisory
  21. 2026-08-13 10:21 UTCGHSA enrichment
  22. 2026-08-12 13:50 UTCEPSS rescore
  23. 2026-08-12 11:04 UTCEG score recompute
  24. 2026-08-12 11:04 UTCVendor advisory
  25. 2026-08-12 11:04 UTCGHSA enrichment
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 11:46 UTCEG score recompute
  28. 2026-08-11 11:46 UTCVendor advisory
  29. 2026-08-11 11:46 UTCGHSA enrichment
  30. 2026-08-11 00:00 UTCEPSS rescore
  31. 2026-08-10 12:28 UTCEG score recompute
  32. 2026-08-10 12:28 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-09 13:04 UTCEG score recompute
  35. 2026-08-09 13:04 UTCVendor advisory
  36. 2026-08-09 13:04 UTCGHSA enrichment
  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-08 13:47 UTCVendor advisory
  39. 2026-08-08 13:47 UTCGHSA enrichment
  40. 2026-08-07 14:29 UTCGHSA enrichment
  41. 2026-08-06 15:12 UTCEG score recompute
  42. 2026-08-06 15:12 UTCVendor advisory
  43. 2026-08-06 15:12 UTCGHSA enrichment
  44. 2026-08-06 13:46 UTCEPSS rescore
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-05 15:54 UTCVendor advisory
  47. 2026-08-05 15:54 UTCGHSA enrichment
  48. 2026-08-04 16:37 UTCEG score recompute
  49. 2026-08-04 16:37 UTCVendor advisory
  50. 2026-08-04 16:37 UTCGHSA enrichment
  51. 2026-08-04 15:10 UTCEPSS rescore
  52. 2026-08-04 10:38 UTCEPSS rescore
  53. 2026-08-03 17:19 UTCGHSA enrichment
  54. 2026-08-03 16:48 UTCEG score recompute
  55. 2026-08-03 16:48 UTCVendor advisory
  56. 2026-08-03 16:48 UTCGHSA enrichment
  57. 2026-08-03 10:35 UTCEPSS rescore
  58. 2026-08-02 17:31 UTCEG score recompute
  59. 2026-08-02 17:31 UTCVendor advisory
  60. 2026-08-02 17:31 UTCGHSA enrichment
  61. 2026-08-02 02:26 UTCEPSS rescore
  62. 2026-08-01 18:13 UTCEG score recompute
  63. 2026-08-01 18:13 UTCVendor advisory
  64. 2026-08-01 18:13 UTCGHSA enrichment
  65. 2026-08-01 04:15 UTCEPSS rescore
  66. 2026-07-31 18:56 UTCEG score recompute
  67. 2026-07-31 18:56 UTCGHSA enrichment
  68. 2026-07-30 19:38 UTCGHSA enrichment
  69. 2026-07-30 18:28 UTCEG score recompute▲ 5.30
  70. 2026-07-30 18:27 UTCGHSA enrichment
  71. 2026-07-30 18:25 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  72. 2026-07-30 01:22 UTCNVD update
  73. 2026-07-30 00:54 UTCEG score recompute
  74. 2026-07-30 00:52 UTCMITRE cvelistV5first tracked

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 88.8% 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

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