What is the CVSS score of CVE-2021-40261?

CVE-2021-40261 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2021-40261?

Yes, a public proof-of-concept exploit is available for CVE-2021-40261. Prioritise patching immediately. EPSS: 0.6%.

PHP CVE-2021-40261

MEDIUM

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

2021-11-08 cve@mitre.org

PHP XSS Casap Automated Enrollment System Casap Automated Enrollment System Project

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Nov 08, 2021 - 21:15 nvd

MEDIUM 6.1

DescriptionNVD

Multiple Cross Site Scripting (XSS) vulnerabilities exist in SourceCodester CASAP Automated Enrollment System 1.0 via the (1) user_username and (2) category parameters in save_class.php, the (3) firstname, (4) class, and (5) status parameters in student_table.php, the (6) category and (7) class_name parameters in add_class1.php, the (8) fname, (9) mname,(10) lname, (11) address, (12) class, (13) gfname, (14) gmname, (15) glname, (16) rship, (17) status, (18) transport, and (19) route parameters in add_student.php, the (20) fname, (21) mname, (22) lname, (23) address, (24) class, (25) fgname, (26) gmname, (27) glname, (28) rship, (29) status, (30) transport, and (31) route parameters in save_stud.php,the (32) status, (33) fname, and (34) lname parameters in add_user.php, the (35) username, (36) firstname, and (37) status parameters in users.php, the (38) fname, (39) lname, and (40) status parameters in save_user.php, and the (41) activity_log, (42) aprjun, (43) class, (44) janmar, (45) Julsep,(46) octdec, (47) Students and (48) users parameters in table_name.

AnalysisAI

Multiple Cross Site Scripting (XSS) vulnerabilities exist in SourceCodester CASAP Automated Enrollment System 1.0 via the (1) user_username and (2) category parameters in save_class.php, the (3). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Multiple Cross Site Scripting (XSS) vulnerabilities exist in SourceCodester CASAP Automated Enrollment System 1.0 via the (1) user_username and (2) category parameters in save_class.php, the (3) firstname, (4) class, and (5) status parameters in student_table.php, the (6) category and (7) class_name parameters in add_class1.php, the (8) fname, (9) mname,(10) lname, (11) address, (12) class, (13) gfname, (14) gmname, (15) glname, (16) rship, (17) status, (18) transport, and (19) route parameters in add_student.php, the (20) fname, (21) mname, (22) lname, (23) address, (24) class, (25) fgname, (26) gmname, (27) glname, (28) rship, (29) status, (30) transport, and (31) route parameters in save_stud.php,the (32) status, (33) fname, and (34) lname parameters in add_user.php, the (35) username, (36) firstname, and (37) status parameters in users.php, the (38) fname, (39) lname, and (40) status parameters in save_user.php, and the (41) activity_log, (42) aprjun, (43) class, (44) janmar, (45) Julsep,(46) octdec, (47) Students and (48) users parameters in table_name. Affected products include: Casap Automated Enrollment System Project Casap Automated Enrollment System.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.