Type Vulnerability
A vulnerability in Google Chrome's Core component before version 157.0.8103.78 allows a remote attacker to leak cross-origin data using a crafted HTML page.
Information leak in Core in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to leak cross-origin data via a crafted HTML page
CVE-2026-126878
What this means
This is rated medium severity (4.3 out of 10). There is no confirmed exploitation of it yet. Ask IT whether Google Chrome is in your estate.
Full vendor description
Information leak in Core in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)
Scoring and exploitation
4.3/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network without any account, but only if a user takes an action, such as opening a file or link. Low impact on confidentiality.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityLowC:L
IntegrityNoneI:N
AvailabilityNoneA:N
- ~0.2% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-200
Affected products ()
- Google Chrome
Show the raw CPE strings (1)
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
References
2 links from the CVE record, grouped by site; the vendor's advisory comes first.
chromereleases.googleblog.com1 linkVendor advisory
- stable-channel-update-for-desktop_01744469280.html (opens in a new tab)Release Notes · Vendor Advisory
issues.chromium.org1 link
- 572312779 (opens in a new tab)Permissions Required