CVE-2026-7979

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Inappropriate implementation in Media in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
4.3
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 6, 2026

Last Modified

May 12, 2026

Advisory Details (2)

Auto-updated May 12, 2026
Patch available.
Web page

Chromium

https://issues.chromium.org/issues/497849876
Web page

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html

Vendor Advisories for CVE-2026-7979(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 rangeFix by version rangeDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (500 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
chromium113.0.5672.126-1 ... 147.0.7727.55-1~deb13u1 (348 versions)
  • every version up to 148.0.7778.96-1~deb12u1: fixed in 148.0.7778.96-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 148.0.7778.96-1~deb12u1 (114 versions)
  • every version up to 148.0.7778.96-1~deb13u1: fixed in 148.0.7778.96-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 148.0.7778.96-1~deb13u1 (115 versions)
  • every version up to 148.0.7778.96-1: fixed in 148.0.7778.96-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 28× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 217 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 124 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:22 UTCEG score recompute
  2. 2026-10-11 16:38 UTCEG score recompute
  3. 2026-10-11 13:56 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 68 more
  1. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-08-23 19:44 UTCEG score recompute
  20. 2026-08-23 19:44 UTCVendor advisory
  21. 2026-08-23 19:44 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  22. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  26. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  27. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  28. 2026-08-17 12:51 UTCEG score recompute
  29. 2026-08-17 12:51 UTCVendor advisory
  30. 2026-08-17 12:51 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  31. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  32. 2026-08-16 04:49 UTCEG score recompute
  33. 2026-08-16 04:49 UTCVendor advisory
  34. 2026-08-16 04:49 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  35. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  36. 2026-08-14 03:22 UTCEG score recompute
  37. 2026-08-14 03:22 UTCVendor advisory
  38. 2026-08-14 03:22 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  39. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  40. 2026-08-13 02:12 UTCEG score recompute
  41. 2026-08-13 02:12 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  42. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  43. 2026-08-12 02:17 UTCEG score recompute
  44. 2026-08-12 02:17 UTCVendor advisory
  45. 2026-08-12 02:17 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  46. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-08-11 02:21 UTCEG score recompute
  48. 2026-08-11 02:21 UTCVendor advisory
  49. 2026-08-11 02:21 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  50. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-08-10 02:26 UTCEG score recompute
  52. 2026-08-10 02:26 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  53. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  54. 2026-08-09 02:31 UTCEG score recompute
  55. 2026-08-09 02:31 UTCVendor advisory
  56. 2026-08-09 02:31 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  57. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  58. 2026-08-08 01:46 UTCEG score recompute
  59. 2026-08-08 01:46 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  60. 2026-08-07 01:51 UTCEG score recompute
  61. 2026-08-07 01:51 UTCVendor advisory
  62. 2026-08-07 01:51 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  63. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  64. 2026-08-05 22:17 UTCEG score recompute
  65. 2026-08-05 22:17 UTCVendor advisory
  66. 2026-08-05 22:17 UTCGHSA enrichmentGHSA-g28f-6ppf-f23m · GitHub CVSS 4.3
  67. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  68. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 5th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-7979?
CVE-2026-7979 is a medium-severity vulnerability; its CVE record was published on May 6, 2026. Inappropriate implementation in Media in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
When was the CVE record for CVE-2026-7979 published?
The CVE record for CVE-2026-7979 was published on May 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 12, 2026; the record at its source may have been updated since.
Is CVE-2026-7979 actively exploited?
CVE-2026-7979 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-7979?
CVE-2026-7979 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-7979?
A fix for CVE-2026-7979 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-7979 are linked in the Vendor Advisories panel on this page.

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