EUVD-2026-79988
GHSA-v3vv-gfwp-qjp6
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Remote web page (AV:N, PR:N) but requires victim navigation (UI:R) and a probabilistic side-channel (AC:H); confidentiality-only information leak, no integrity or availability impact.
Primary rating from Vendor (google).
CVSS VectorVendor: google
Lifecycle Timeline
4DescriptionCVE.org
Observable discrepancy in Fonts in Google Chrome prior to 153.0.8010.47 allowed a remote attacker leveraging social engineering to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Information disclosure in Google Chrome builds prior to 153.0.8010.47 allows a remote, unauthenticated attacker to leak sensitive data from the victim's browser by measuring font-related observable discrepancies on a crafted HTML page, a technique that requires the victim to be socially engineered into loading that page (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N, base 5.3). Impact is confidentiality-only, with no integrity or availability effect, and the high attack complexity reflects the probabilistic nature of the CWE-203 side channel, so reliable exfiltration demands specific conditions rather than a single deterministic request. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to be socially engineered into loading attacker-controlled HTML in a vulnerable Chrome build (any desktop version prior to 153.0.8010.47) - the CVSS UI:R plus the description's 'leveraging social engineering' make user interaction mandatory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but low-to-moderate priority issue best characterized as high-CVSS-context-but-modest-real-risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Chrome 153.0.8010.47 - upgrade to 153.0.8010.47 or later through the stable channel, using Google's advisory at chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0541751186.html as the authoritative source. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-203 – Observable Discrepancy
View allSame technique Information Disclosure
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External POC / Exploit Code
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