Security readout for executives and security teams
Plain-English summary
CVE-2022-2861 is a Chrome Extensions API flaw fixed before version 104.0.5112.101. If a user installed a malicious extension, an attacker could use a crafted HTML page to inject scripts into Chrome WebUI. The main business concern is browser integrity compromise on endpoints running outdated Chrome with weak extension controls.
Executive priority
Treat this as a routine but important endpoint hygiene issue. Prioritize browser patch compliance and extension governance, not emergency incident response, unless local telemetry shows suspicious extension activity.
Technical view
Google describes this as an inappropriate implementation in Chrome's Extensions API, classified as CWE-79. The attack requires user interaction: installing a malicious extension and visiting crafted content. The CVSS 3.1 score is 6.5, with high integrity impact and no stated confidentiality or availability impact.
Likely exposure
Exposure is most likely on managed or unmanaged endpoints running Google Chrome before 104.0.5112.101, especially where users can install unapproved extensions. Fedora Chromium package consumers should also review the referenced Fedora advisory.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The documented path requires persuading a user to install a malicious extension, then leveraging crafted HTML to inject scripts into WebUI.
Researcher notes
Public details are limited. The Chrome bug reference is included, but the bundle does not provide exploit mechanics. The validated facts are the affected pre-104.0.5112.101 Chrome condition, Extensions API/WebUI script injection impact, CWE-79 mapping, and user-assisted malicious extension prerequisite.
Mitigation direction
- Update Chrome to 104.0.5112.101 or later.
- Apply relevant distribution browser updates, including Fedora guidance where applicable.
- Restrict extension installation to approved, trusted extensions.
- Review vendor guidance for any additional mitigations or affected package details.
Validation and detection
- Inventory Chrome versions and flag anything earlier than 104.0.5112.101.
- Review enterprise extension policies for unmanaged installation paths.
- Audit installed extensions for unapproved or suspicious entries.
- Confirm Linux package versions against the Fedora advisory if Fedora Chromium is used.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-2861 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop_16.htmlCVE reference · x_refsource_MISC
- https://crbug.com/1346236CVE reference · x_refsource_MISC
- FEDORA-2022-3f28aa88cfCVE reference · vendor-advisory, x_refsource_FEDORA
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.