How severe is CVE-2026-31854?

CVE-2026-31854 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-31854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31854?

CVE-2026-31854 affects Anysphere Cursor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31854?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-31854 have an EU (EUVD) identifier?

Yes. CVE-2026-31854 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11245.

When was CVE-2026-31854 published?

CVE-2026-31854 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-31854

CVE-2026-31854 is a high-severity vulnerability in Anysphere Cursor with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11245
Weakness: CWE-78
Affected product: Anysphere Cursor
Published: 2026-03-11
Last modified: 2026-06-17

Description

Cursor is a code editor built for programming with AI. Prior to 2.0 ,if a visited website contains maliciously crafted instructions, the model may attempt to follow them in order to “assist” the user. When combined with a bypass of the command whitelist mechanism, such indirect prompt injections could result in commands being executed automatically, without the user’s explicit intent, thereby posing a significant security risk. This vulnerability is fixed in 2.0.

Frequently asked questions

What is CVE-2026-31854?: Cursor is a code editor built for programming with AI. Prior to 2.0 ,if a visited website contains maliciously crafted instructions, the model may attempt to follow them in order to “assist” the user. When combined with a bypass of the command whitelist mechanism, such indirect prompt injections could result in commands being executed automatically, without the user’s explicit intent, thereby posing a significant security risk. This vulnerability is fixed in 2.0.
How severe is CVE-2026-31854?: CVE-2026-31854 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-31854 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31854?: CVE-2026-31854 affects Anysphere Cursor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31854?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-31854 have an EU (EUVD) identifier?: Yes. CVE-2026-31854 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11245.
When was CVE-2026-31854 published?: CVE-2026-31854 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://github.com/cursor/cursor/security/advisories/GHSA-hf2x-r83r-qw5q

Affected products (1)

cpe:2.3:a:anysphere:cursor:*:*:*:*:*:*:*:*

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