How severe is CVE-2020-12853?

CVE-2020-12853 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-2020-12853 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-2020-12853?

CVE-2020-12853 affects Pydio Cells. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12853?

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

When was CVE-2020-12853 published?

CVE-2020-12853 was published on 2020-06-04 and last updated on 2026-06-17.

CVE-2020-12853

CVE-2020-12853 is a medium-severity vulnerability in Pydio Cells 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: Pydio Cells
Published: 2020-06-04
Last modified: 2026-06-17

Description

Pydio Cells 2.0.4 allows XSS. A malicious user can either upload or create a new file that contains potentially malicious HTML and JavaScript code to personal folders or accessible cells.

Frequently asked questions

What is CVE-2020-12853?: Pydio Cells 2.0.4 allows XSS. A malicious user can either upload or create a new file that contains potentially malicious HTML and JavaScript code to personal folders or accessible cells.
How severe is CVE-2020-12853?: CVE-2020-12853 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-2020-12853 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-2020-12853?: CVE-2020-12853 affects Pydio Cells. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12853 published?: CVE-2020-12853 was published on 2020-06-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pydio:cells:2.0.4:*:*:*:*:*:*:*

More vulnerabilities in Pydio Cells

CVE-2023-32749 — High (CVSS 8.8): Pydio Cells allows users by default to create so-called external users in order to share files with them. By modifying…
CVE-2019-12901 — High (CVSS 8.8): Pydio Cells before 1.5.0 fails to neutralize '../' elements, allowing an attacker with minimum privilege to Upload…
CVE-2020-12851 — High (CVSS 8.1): Pydio Cells 2.0.4 allows an authenticated user to write or overwrite existing files in another user’s personal and…
CVE-2020-12847 — High (CVSS 7.2): Pydio Cells 2.0.4 web application offers an administrative console named “Cells Console” that is available to users…
CVE-2020-12850 — High (CVSS 7.0): The following vulnerability applies only to the Pydio Cells Enterprise OVF version 2.0.4. Prior versions of the Pydio…
CVE-2020-12852 — Medium (CVSS 6.8): The update feature for Pydio Cells 2.0.4 allows an administrator user to set a custom update URL and the public RSA key…

All CVEs affecting Pydio Cells →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →