6.5

CVE-2026-78955: google chrome Observable Discrepancy

Analyzed
AliasesDEBIAN-CVE-2026-78955CGA-448f-x52q-p2jwCGA-4ffc-3ggp-rhp2
Published 25-08-2026Last modified 28-08-2026

Vulnerability summary

CVE-2026-78955 is a medium (CVSS 6.5) Observable Discrepancy vulnerability in google chrome. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2026:11628-1OPENSUSE-SU-2026:21724-1OPENSUSE-SU-2026:21799-1CGA-H5P5-MGJ6-9CG2

Timeline

  1. 25-08-2026
    PublishedVulnerability first disclosed.
  2. 28-08-2026
    Last modifiedVulnerability information updated.

Description

Observable discrepancy in PerformanceAPIs in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.32% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard3 products
  • chromium< 152.0.7977.75-r0
  • chromium-docker-selenium-compat< 152.0.7977.75-r0
  • chromium-lang< 152.0.7977.75-r0
Wolfi3 products
  • chromium< 152.0.7977.75-r0
  • chromium-docker-selenium-compat< 152.0.7977.75-r0
  • chromium-lang< 152.0.7977.75-r0
Debian1 product
  • chromium< 152.0.7977.75-1~deb12u1 | < 152.0.7977.75-1~deb13u1 | < 152.0.7977.64-1
Google1 product
  • chrome≥ 152.0.7977.65, < 152.0.7977.65 | < 152.0.7977.65

4 vendors · 8 products

References

3 links