CVE-2026-111662 chaskiq CVE debrief

Who should care

Defenders responsible for Chaskiq deployments should assess exposure and potential impact on internal networks. This includes verifying the exposure of the /oembed endpoint, implementing compensating controls, and reviewing vendor-supported updates or mitigations. Security teams and vulnerability management teams should also prioritize this vulnerability due to its potential impact on internal networks and sensitive information.

Why it matters

CVE-2026-111662 is a server-side request forgery vulnerability in Chaskiq through 2.0.3 that allows unauthenticated attackers to make the server fetch arbitrary URLs via the url parameter of the /oembed endpoint. Defenders should prioritize verifying exposure of the /oembed endpoint and assessing potential impact on internal networks.

• Potential unauthorized access to internal networks
• Possible exposure of sensitive information
• Risk of lateral movement within the network
• Need for verification of endpoint exposure and compensating controls

Technical summary

The vulnerability allows unauthenticated attackers to make the server fetch arbitrary URLs via the url parameter of the /oembed endpoint. The FetchLinkCardService follows redirects and skips TLS verification, allowing attackers to target loopback, private, or cloud-metadata addresses to read internal page titles and descriptions. This vulnerability affects Chaskiq through 2.0.3 and has a CVSS score of 6.9, classified as MEDIUM severity. Defenders should prioritize verifying exposure of the /oembed endpoint and assessing potential impact on internal networks.

Defensive priority

Defenders should prioritize verifying exposure of the /oembed endpoint and assessing potential impact on internal networks.

Recommended defensive actions

• Verify exposure of the /oembed endpoint in Chaskiq deployments
• Assess potential impact on internal networks
• Implement compensating controls to restrict access to the /oembed endpoint
• Review vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description and affected versions. The vulnerability was discovered in Chaskiq through 2.0.3. The CVE Program record and NVD detail page offer additional information on the vulnerability. Defenders should verify the exposure of the /oembed endpoint and assess potential impact on internal networks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.