Security readout for executives and security teams
Plain-English summary
This is a high-severity XSS in Wire’s web app. A crafted image could run code on the Wire web domain if a user opened the image URL in a new tab or pasted it into the address bar. The source states this could let an attacker fully control the user account.
Executive priority
Treat as urgent if your organization operates or depends on an older Wire web client. The vulnerability can lead to full account compromise, but the provided evidence indicates a patch exists and does not establish active exploitation.
Technical view
CVE-2021-32683 affects wire-webapp before 2021-06-01-production.0. The issue is CWE-79 XSS involving createObjectURL/image handling. Exploitation requires user interaction, but no privileges. CVSS 3.1 is 8.8 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely for organizations or users running wire-webapp versions earlier than 2021-06-01-production.0. The provided sources identify wire-webapp and app.wire.com behavior, but do not list broader downstream products or deployments.
Exploitation context
The bundle does not show CISA KEV listing or other evidence of active exploitation. The attack path requires convincing a user to open an image URL outside the normal viewer flow, after which malicious content could execute in the app’s domain context.
Researcher notes
Evidence supports a user-assisted XSS tied to opening crafted image object URLs. Avoid assuming automatic message-view compromise; the described path requires opening the image URL. The source bundle names the patch version but does not provide enough detail to infer all vulnerable forks or custom builds.
Mitigation direction
- Upgrade wire-webapp to 2021-06-01-production.0 or later.
- Follow the GitHub advisory for current vendor guidance.
- Until patched, instruct users not to open image URLs in new tabs.
- Review potentially affected accounts if suspicious image interactions were reported.
Validation and detection
- Inventory deployed wire-webapp versions and compare against 2021-06-01-production.0.
- Confirm hosted web clients are running the patched release.
- Review the referenced fixing commit for the changed image URL handling.
- Check helpdesk or security reports for suspicious image-link interactions.
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-2021-32683 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/wireapp/wire-webapp/security/advisories/GHSA-382j-mmc8-m5rwCVE reference · x_refsource_CONFIRM
- https://github.com/wireapp/wire-webapp/commit/056e39d327bb10c1b0958dfbea0c39752692a1b0CVE reference · x_refsource_MISC
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.