Security readout for executives and security teams
Plain-English summary
Templ8 has a prototype pollution flaw in its parse function. If an affected application processes attacker-controlled data through that path, JavaScript object behavior may be altered in ways that can affect confidentiality, integrity, or availability. The source bundle rates this critical, but does not cite active exploitation.
Executive priority
Prioritize assessment and remediation for internet-facing or multi-tenant JavaScript services using templ8. The rating is critical, but the evidence provided does not show confirmed active exploitation or a named patch.
Technical view
CVE-2020-7702 affects all versions of the JavaScript package templ8, according to the provided description. The weakness is prototype pollution through parse. The supplied CVSS 3.1 score is 9.8, network exploitable, low complexity, no privileges, no user interaction, with high CIA impact.
Likely exposure
Exposure is likely in JavaScript applications that directly or transitively depend on templ8 and pass untrusted data into templ8 parse behavior. The bundle does not identify specific applications, platforms, or deployments beyond the templ8 package.
Exploitation context
The provided KEV flag is false, and no cited source states active exploitation. The source bundle includes exploit maturity as proof-of-concept, so treat exploitability as plausible but do not assume known in-the-wild abuse from these sources alone.
Researcher notes
The evidence is narrow: CVE metadata and Snyk are the only supplied public sources. Validate package reachability before escalating impact, because prototype pollution severity depends heavily on how the polluted object state is used downstream.
Mitigation direction
- Inventory direct and transitive use of the templ8 package.
- Check the Snyk advisory and package maintainers for remediation guidance.
- Replace or remove templ8 where no maintained fix is available.
- Prioritize services parsing externally supplied or tenant-controlled data.
- Monitor dependency advisories for updated remediation information.
Validation and detection
- Review package manifests and lockfiles for templ8 dependency entries.
- Use software composition analysis to find transitive templ8 usage.
- Trace whether untrusted input can reach templ8 parse behavior.
- Confirm compensating controls are documented, tested, and not treated as a vendor fix.
- Record affected applications, owners, and remediation status.
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
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CVE-2020-7702 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
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:H/I:H/A:H/E:P/RL:U/RC:C3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://snyk.io/vuln/SNYK-JS-TEMPL8-598770CVE 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.