CVE-2026-73060 scriban CVE debrief

Who should care

Organizations using Scriban versions 3.0.0 through 7.2.5 in their applications should prioritize patching to prevent potential denial of service attacks. This includes developers and administrators responsible for maintaining applications that utilize Scriban for templating or scripting functionality.

Technical summary

The Scriban library, versions 3.0.0 through 7.2.5, contains a denial of service vulnerability in the ScriptRange.Multiply operator. This vulnerability allows attackers to bypass the LoopLimit by supplying templates with array multiplication on lazy sequences, potentially leading to high CPU usage and garbage collection resource exhaustion. The vulnerability can be exploited by supplying templates with array multiplication on lazy sequences, which can lead to billions of uncharged iterations, pinning CPU cores and exhausting garbage collection resources. Organizations using Scriban versions from 3.0.0 through 7.2.5 should prioritize patching to prevent potential denial of service attacks. Developers and administrators responsible for maintaining applications that utilize Scriban for templating or scripting functionality should assess and mitigate this vulnerability accordingly. The CVSS score is 8.7, indicating a high severity vulnerability. To address this vulnerability, it is essential to apply patches or updates to Scriban versions 3.0.0 through 7.2.5 and implement compensating controls, such as monitoring for suspicious template usage. Additionally, consider restricting access to Scriban functionality to trusted users and reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Review compensating controls for exposed systems while remediation is scheduled and verified. 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. The CVE-2026-73060 record indicates a denial of service vulnerability in Scriban versions from 3.0.0 through 7.2.5, specifically in the ScriptRange.Multiply operator. The vulnerability allows attackers to execute billions of uncharged iterations by supplying templates with array multiplication on lazy sequences, potentially pinning CPU cores.

Defensive priority

Organizations using Scriban versions from 3.0.0 through 7.2.5 should prioritize patching to prevent potential denial of service attacks.

Recommended defensive actions

• Inventory and assess Scriban usage in your environment.
• Apply patches or updates to Scriban versions 3.0.0 through 7.2.5.
• Implement compensating controls, such as monitoring for suspicious template usage.
• Consider restricting access to Scriban functionality to trusted users.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE-2026-73060 record indicates a denial of service vulnerability in Scriban versions from 3.0.0 through 7.2.5, specifically in the ScriptRange.Multiply operator. The vulnerability allows attackers to execute billions of uncharged iterations by supplying templates with array multiplication on lazy sequences, potentially pinning CPU cores and exhausting garbage collection resources. The CVSS score is 8.7, indicating a high severity vulnerability.

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.