CVE-2026-0547VulnerabilityPublished 2 Jan 2026Updated 23 Feb 2026

CVE-2026-0547: PHPGurukul Online Course Registration · Unrestricted Upload

Affects PHPGurukul Online Course RegistrationSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 2 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
GitHubrsecroot/Online-Course-Registration`pkg:github/rsecroot/Online-Course-Registration`Other threats	Affected =3.0 =3.1	Fixed in–

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AI-suggested

Organizations should immediately assess their use of PHPGurukul Online Course Registration versions 3.0 and 3.1 and plan to upgrade to patched versions once available. In the absence of official patches, implement strict input validation and file type restrictions on the 'photo' upload functionality to prevent unauthorized file types. Employ server-side checks to verify file extensions, MIME types, and scan uploaded files for malware. Restrict upload directories to non-executable locations and configure web servers to disallow execution of uploaded files. Implement strong access controls to limit administrative interface access to trusted users and networks. Monitor logs for unusual upload activity and conduct regular security audits. Consider deploying web application firewalls (WAF) with rules to detect and block suspicious file uploads. Educate administrators about the risks and signs of exploitation attempts. Finally, isolate the affected application environment to minimize lateral movement in case of compromise.

Description

A vulnerability was found in PHPGurukul Online Course Registration up to 3.1. This issue affects some unknown processing of the file /admin/edit-student-profile.php of the component Student Registration Page. The manipulation of the argument photo results in unrestricted upload. The attack may be launched remotely. The exploit has been made public and could be used.

Impact

The unrestricted file upload vulnerability in PHPGurukul Online Course Registration can have significant impacts on organizations using affected versions. Attackers could upload malicious files leading to remote code execution, enabling full system compromise. This could result in data breaches involving sensitive student information, unauthorized access to administrative functions, and potential disruption of educational services. The integrity of student records and course data could be altered or destroyed. Availability could be impacted if attackers deploy ransomware or cause denial-of-service conditions. The medium CVSS score reflects moderate but tangible risks, especially in environments where the application is internet-facing or integrated with other critical systems. The vulnerability's ease of exploitation without user interaction or high privileges increases the threat landscape, making it attractive for attackers targeting educational institutions or related organizations.

Summary

CVE-2026-0547 is a vulnerability identified in PHPGurukul's Online Course Registration software, specifically affecting versions 3.0 and 3.1. The issue resides in the /admin/edit-student-profile.php file, where the 'photo' parameter is improperly handled, allowing unrestricted file uploads. This means an attacker with low privileges can remotely upload arbitrary files, including potentially malicious scripts, without sufficient validation or restrictions. The vulnerability does not require user interaction or elevated privileges beyond low-level access, making it easier to exploit in environments where attackers have limited access. The unrestricted upload can lead to remote code execution if the uploaded file is a web shell or other executable script, compromising the server's confidentiality, integrity, and availability. While no known exploits are currently reported in the wild, the public disclosure of the vulnerability increases the risk of exploitation. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required beyond low privileges, and no user interaction needed, with limited impact on confidentiality, integrity, and availability. The lack of patch links suggests that fixes may not yet be widely available, emphasizing the need for immediate mitigation steps.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 23:10 UTC

Technical details

References

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