Security readout for executives and security teams
Plain-English summary
CVE-2020-7761 is a denial-of-service issue in the npm package @absolunet/kafe before 3.2.10. A specially crafted invalid email can make validation consume excessive processing time, potentially slowing or disrupting services that validate untrusted email input.
Executive priority
Treat as moderate priority. Remediate in the normal dependency update cycle, but accelerate if internet-facing forms or APIs use this package for unauthenticated email validation.
Technical view
The source bundle describes a Regular Expression Denial of Service in @absolunet/kafe before 3.2.10 during invalid email validation. CVSS 3.1 is 5.3, network exploitable, low complexity, no privileges, no user interaction, and availability-only impact.
Likely exposure
Exposure is likely limited to applications that depend on @absolunet/kafe before 3.2.10 and use its email validation on attacker-controlled input, such as signup, contact, invite, or API fields.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Practical risk depends on whether vulnerable validation is reachable remotely and whether repeated slow validations can affect application capacity.
Researcher notes
Affected versions are only described as before 3.2.10, and no CWE is supplied in the bundle. The evidence supports availability impact from ReDoS, not confidentiality, integrity impact, or confirmed exploitation.
Mitigation direction
- Upgrade @absolunet/kafe to version 3.2.10 or later.
- Check vendor and package advisories for any additional guidance.
- Reduce unauthenticated request volume to affected email validation paths.
- Apply rate limiting to public forms and APIs using email validation.
Validation and detection
- Inventory package manifests and lockfiles for @absolunet/kafe versions.
- Confirm whether email validation uses @absolunet/kafe on untrusted input.
- Map exposed routes that accept email addresses before authentication.
- Verify production builds use the upgraded dependency version.
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
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ATT&CK lookup starting points
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CVE-2020-7761 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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:N/S:U/C:N/I:N/A:L3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://snyk.io/vuln/SNYK-JS-ABSOLUNETKAFE-1017403CVE reference · x_refsource_MISC
- https://github.com/absolunet/kafe/commit/c644c798bfcdc1b0bbb1f0ca59e2e2664ff3fdd0%23diff-f0f4b5b19ad46588ae9d7dc1889f681252b0698a4ead3a77b7c7d127ee657857CVE 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.