CVE-2020-5283

lowpriority · track · 14EPSS 0.014 · 72 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.36% (72nd) EPSS

CVSS 2.1 · low

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

ViewVC before versions 1.1.28 and 1.2.1 has a XSS vulnerability in CVS show_subdir_lastmod support. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28.

cvss

Technical severity, 0–10. One row per scoring source.

3.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.02.1lowAV:N/AC:H/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 0.9 · impact 2.5

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.13.1lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 0.5 · impact 2.5

v3.13.2lowCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-80US

affected products (4)

Products and version ranges known to be affected.

viewvc viewvc≤ < 1.1.28enisa_euvdEU
viewvc viewvc1.2.0, → 1.2.1enisa_euvdEU
viewvc viewvc< 1.1.28nvdUScpe:2.3:a:viewvc:viewvc:*:*:*:*:*:*:*:*
viewvc viewvc1.2.0 → 1.2.1nvdUScpe:2.3:a:viewvc:viewvc:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-04-03modified 2026-06-17

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+53061 more

references (14)

External citations — patches, advisories, analysis.

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