How severe is CVE-2020-29259?

CVE-2020-29259 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-29259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29259?

CVE-2020-29259 affects Online Examination System Project Online Examination System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29259?

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

When was CVE-2020-29259 published?

CVE-2020-29259 was published on 2020-12-09 and last updated on 2026-06-17.

CVE-2020-29259

CVE-2020-29259 is a medium-severity vulnerability in Online Examination System Project Online Examination System with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Online Examination System Project Online Examination System
Published: 2020-12-09
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in Online Examination System 1.0 via the subject or feedback parameter to feedback.php.

Frequently asked questions

What is CVE-2020-29259?: Cross-site scripting (XSS) vulnerability in Online Examination System 1.0 via the subject or feedback parameter to feedback.php.
How severe is CVE-2020-29259?: CVE-2020-29259 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-29259 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29259?: CVE-2020-29259 affects Online Examination System Project Online Examination System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29259?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-29259 published?: CVE-2020-29259 was published on 2020-12-09 and last updated on 2026-06-17.

References

https://asfiyashaikh20.medium.com/cve-2020-29259-persistent-xss-2ef63cc5cee6

Affected products (1)

cpe:2.3:a:online_examination_system_project:online_examination_system:1.0:*:*:*:*:*:*:*

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