Security readout for executives and security teams
Plain-English summary
This flaw affects some Electron desktop applications. Under specific frame and IPC conditions, a message intended for one embedded frame can be delivered to another. That can expose or alter limited data inside the application, but the sources rate it medium and do not show active exploitation.
Executive priority
Treat this as a targeted dependency upgrade for Electron desktop apps, not an emergency internet-wide incident. Prioritize apps that load complex embedded content or handle sensitive IPC data, especially where affected Electron versions remain in production.
Technical view
Electron IPC before 9.4.0, 10.2.0, 11.1.0, and 12.0.0-beta.9 can misroute main-process messages to the wrong renderer subframe when OOPIFs are present. Impacted paths include remote, webContents.sendToFrame, and event.reply in IPC handlers. CVSS 3.1 is 5.4 with low confidentiality and integrity impact.
Likely exposure
Exposure is limited to Electron applications using affected versions and the named IPC patterns: remote, webContents.sendToFrame, or event.reply. Applications without those patterns, or already on fixed Electron releases, are not shown as affected by the provided sources.
Exploitation context
The bundle does not indicate active exploitation: KEV is false, and cited sources do not state exploitation in the wild. Practical risk depends on application design and whether sensitive or trusted IPC messages can be misdelivered between frames.
Researcher notes
The key condition is IPC routing to renderer subframes containing OOPIFs. The bug is an ID collision issue mapped to CWE-668. The provided sources define affected versions and fixed releases but do not provide evidence of public exploitation or a workaround.
Mitigation direction
- Upgrade Electron to 9.4.0, 10.2.0, 11.1.0, 12.0.0-beta.9, or later.
- Prioritize applications using remote, webContents.sendToFrame, or event.reply IPC handlers.
- Check vendor guidance because the advisory states there are no known workarounds.
- Retest packaged desktop applications after upgrading Electron.
Validation and detection
- Inventory Electron versions in dependency manifests and lockfiles.
- Review code for remote, webContents.sendToFrame, and event.reply usage.
- Confirm OOPIF or subframe-heavy content is present in affected application flows.
- Verify the packaged build uses a fixed Electron release.
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-668: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2020-26272 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/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:H/PR:N/UI:N/S:C/C:L/I:L/A:N2.22.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/electron/electron/security/advisories/GHSA-hvf8-h2qh-37m9CVE reference · x_refsource_CONFIRM
- https://github.com/electron/electron/pull/26875CVE reference · x_refsource_MISC
- https://github.com/electron/electron/commit/07a1c2a3e5845901f7e2eda9506695be58edc73cCVE reference · x_refsource_MISC
- https://github.com/electron/electron/commit/0bbd268eb4caf35604443df5ff196980dd49e208CVE reference · x_refsource_MISC
- https://github.com/electron/electron/commit/36c695ce2a7e22c07fe1e30c61c00d20371daee2CVE reference · x_refsource_MISC
- https://github.com/electron/electron/commit/429400040ecb16a21d19936658579e65a797e4ccCVE reference · x_refsource_MISC
- https://github.com/electron/electron/commit/5c8e7e8b7f485ceafa8b271086d7b87e1de9deddCVE reference · x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v9.4.0CVE reference · x_refsource_MISC
- https://www.electronjs.org/releases/stable?version=9#9.4.0CVE 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.
Exposure of Resource to Wrong Sphere
Exposure of Resource to Wrong Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.