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CVE-2021-26765

30
FAUCET Score

CVE-2021-26765 is a critical SQL injection vulnerability affecting PHPGurukul Student Record System 4.0, specifically through the 'sid' parameter in edit-sub.php. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication, allowing attackers to achieve full compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there's no evidence of active exploitation or significant community discussion, the high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:phpgurukul:student_record_system:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.92%
Probability of exploitation in next 30 days
EPSS Percentile
85.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0292 is in the 77th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / BigTiger2020/Student-Record-System-/blob/main/README.md
ExploitThird Party Advisory
packetstormsecurity.com / files/161237/Student-Record-System-4.0-SQL-Injection.html
ExploitThird Party AdvisoryVDB Entry
phpgurukul.com
Vendor Advisory
phpgurukul.com / wp-content/uploads/2019/05/schoolmanagement.zip
Vendor Advisory