CVE-2021-28424

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 68.6% of scored records. A rank, not a probability.

NVD base score

5.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-07-01 14:48Z5 YR AGO

Last updated

2024-08-03 21:40Z2 YR AGO

Reserved

2021-03-15

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

0627632ee4bfc827c1970d093f683cb51dae131ce052d6feec25f3206b8b4642

• phpgurukul.comhttps://phpgurukul.com/teachers-record-management-system-using-php-and-mysql/x_refsource_MISC
• nhattruong.bloghttps://nhattruong.blog/2021/05/22/cve-2021-28424-teachers-record-management-system-1-0-email-stored-cross-site-scripting-xss-vulnerability-authenticated/x_refsource_MISC
• www.exploit-db.comhttps://www.exploit-db.com/exploits/50019x_refsource_MISC
• packetstormsecurity.comhttps://packetstormsecurity.com/files/163171/Teachers-Record-Management-System-1.0-Cross-Site-Scripting.htmlx_refsource_MISC