VulnerabilityPublished 8 Mar 2026Updated 11 Mar 2026

CVE-2026-3719: Tsinghua Unigroup Electronic Archives System · Path Traversal

Affects Tsinghua Unigroup Electronic Archives SystemSource CVE Database V5

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Public exploit available · CVSS 6.9 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score

6.9Medium

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

EPSS: 0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
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: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within 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 8 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
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), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity 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
Tsinghua UnigroupElectronic Archives System	Affected =3.2.210802(62532)	Fixed in–

AI-suggested

Given the absence of an official patch from the vendor, organizations should implement the following specific mitigations: 1) Restrict network access to the /System/Cms/downLoad endpoint using firewall rules or web application firewalls (WAFs) to limit exposure to trusted IP addresses only. 2) Employ input validation and filtering at the network perimeter or reverse proxy to detect and block path traversal patterns such as '../' sequences in the 'path' parameter. 3) Monitor web server and application logs for suspicious requests targeting the download endpoint, especially those containing directory traversal payloads, and establish alerting mechanisms. 4) Isolate the Electronic Archives System within a segmented network zone with minimal access to sensitive internal resources to contain potential breaches. 5) Regularly back up critical data and ensure backups are stored securely offline to mitigate potential secondary attacks. 6) Consider deploying runtime application self-protection (RASP) or endpoint detection and response (EDR) tools to detect anomalous file access patterns. 7) Engage with the vendor for updates and track vulnerability disclosures for future patches. 8) If feasible, conduct a code review or penetration test to identify other potential input validation weaknesses in the system. These targeted steps go beyond generic advice by focusing on network-level controls, monitoring, and containment strategies tailored to this specific vulnerability and product.

Description

A vulnerability was identified in Tsinghua Unigroup Electronic Archives System 3.2.210802(62532). This issue affects some unknown processing of the file /System/Cms/downLoad. The manipulation of the argument path leads to path traversal. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The primary impact of CVE-2026-3719 is unauthorized disclosure of sensitive information due to arbitrary file access on affected systems. Attackers exploiting this vulnerability can read confidential documents, configuration files, or credentials stored on the server, potentially leading to further compromise or data breaches. Since the vulnerability requires no authentication and can be exploited remotely, it significantly increases the risk profile for organizations using the affected Electronic Archives System. Exposure of sensitive archives could damage organizational reputation, violate compliance requirements, and result in financial losses. Additionally, attackers might leverage accessed files to escalate privileges or pivot within the network. The availability and integrity of the system are not directly impacted by this vulnerability, but the confidentiality breach alone is critical for organizations handling sensitive or regulated data. The presence of public exploit code further elevates the threat, as less skilled attackers can attempt exploitation. The lack of vendor patching means organizations must rely on mitigations or workarounds, increasing operational complexity and risk.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 15 Mar 2026, 09:10 UTC

Technical details

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