# CVE-2021-27938: XSS in CreateQueuedJobTask > An attacker can inject arbitrary scripts via a crafted URL in the CreateQueuedJobTask, potentially leading to code execution or account takeover. - **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 16 Mar 2021 - **Updated:** 3 Aug 2024 - **Also known as:** GHSA-xgpf-p52j-pf7m ## What is CVE-2021-27938? CVE-2021-27938 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official 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. Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation) ## Which versions are affected by CVE-2021-27938? 18 open source packages ship an affected version, including symbiote/silverstripe-queuedjobs. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `symbiote/silverstripe-queuedjobs` | Packagist | From 3.0.0 | 3.0.2 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 3.0.0 | 3.0.2 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 3.1.0 | 3.1.4 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 3.1.0 | 3.1.4 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.0.0 | 4.0.7 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.0.0 | 4.0.7 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.1.0 | 4.1.2 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.1.0 | 4.1.2 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.2.0 | 4.2.4 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.2.0 | 4.2.4 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.3.0 | 4.3.3 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.3.0 | 4.3.3 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.4.0 | 4.4.3 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.4.0 | 4.4.3 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.5.0 | 4.5.1 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.5.0 | 4.5.1 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.6.0 | 4.6.4 | | `symbiote/silverstripe-queuedjobs` | Packagist | From 4.6.0 | 4.6.4 | Products: Symbiote Silverstripe Queued Jobs. ## How do I fix CVE-2021-27938? Upgrade symbiote/silverstripe-queuedjobs to a fixed version for your release line: 3.0.2, 3.1.4, 4.0.7 or 4.1.2. ## Is CVE-2021-27938 being exploited? There is no known exploitation of CVE-2021-27938 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2021-27938 and fix it if it is affected. What it is: CVE-2021-27938 is a medium-severity cross-site scripting vulnerability in n/a, published on 16 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2021-27938 in the wild and no public exploit code. Affected packages and fixed versions: - symbiote/silverstripe-queuedjobs (Packagist): affected from 3.0.0; fixed in 3.0.2 - symbiote/silverstripe-queuedjobs (Packagist): affected from 3.0.0; fixed in 3.0.2 - symbiote/silverstripe-queuedjobs (Packagist): affected from 3.1.0; fixed in 3.1.4 - symbiote/silverstripe-queuedjobs (Packagist): affected from 3.1.0; fixed in 3.1.4 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.0.0; fixed in 4.0.7 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.0.0; fixed in 4.0.7 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.1.0; fixed in 4.1.2 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.1.0; fixed in 4.1.2 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.2.0; fixed in 4.2.4 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.2.0; fixed in 4.2.4 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.3.0; fixed in 4.3.3 - symbiote/silverstripe-queuedjobs (Packagist): affected from 4.3.0; fixed in 4.3.3 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2021-27938/ (Markdown: https://insights.sbomify.com/CVE-2021-27938/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27938 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27938 - OSV: https://osv.dev/vulnerability/CVE-2021-27938 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-27938/ Summaries are generated and may contain mistakes; the official description above is the record.