How severe is CVE-2021-27938?

CVE-2021-27938 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-27938 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27938?

CVE-2021-27938 affects Symbiote Silverstripe Queued Jobs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27938?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27938 published?

CVE-2021-27938 was published on 2021-03-16 and last updated on 2026-06-17.

CVE-2021-27938

CVE-2021-27938 is a medium-severity vulnerability in Symbiote Silverstripe Queued Jobs with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Symbiote Silverstripe Queued Jobs
Published: 2021-03-16
Last modified: 2026-06-17

Description

A vulnerability has been identified in the Silverstripe CMS 3 and 4 version of the symbiote/silverstripe-queuedjobs module. A Cross Site Scripting vulnerability allows an attacker to inject an arbitrary payload in the CreateQueuedJobTask dev task via a specially crafted URL.

Frequently asked questions

What is CVE-2021-27938?: A vulnerability has been identified in the Silverstripe CMS 3 and 4 version of the symbiote/silverstripe-queuedjobs module. A Cross Site Scripting vulnerability allows an attacker to inject an arbitrary payload in the CreateQueuedJobTask dev task via a specially crafted URL.
How severe is CVE-2021-27938?: CVE-2021-27938 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-27938 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27938?: CVE-2021-27938 affects Symbiote Silverstripe Queued Jobs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27938?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27938 published?: CVE-2021-27938 was published on 2021-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:symbiote:silverstripe_queued_jobs:*:*:*:*:*:*:*:*

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