CVE-2026-2672VulnerabilityPublished 18 Feb 2026Updated 23 Feb 2026

CVE-2026-2672: Tsinghua Unigroup Electronic Archives System · Path Traversal

Affects Tsinghua Unigroup Electronic Archives SystemSource 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: 0.6% chance of exploitation in 30 days – higher than 51% 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:N/VA:N/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: 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: 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: 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 18 Feb 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
Tsinghua UnigroupElectronic Archives System	Affected =3.2.210802(62532)	Fixed in–

AI-suggested

1. Immediately restrict external access to the /Search/Subject/downLoad endpoint via network controls such as firewalls or web application firewalls (WAFs) to limit exposure. 2. Implement input validation and sanitization at the application or proxy level to block path traversal patterns (e.g., '..', '%2e%2e', or other encoded traversal sequences) in the 'path' parameter. 3. Employ strict access controls and file system permissions on the server to ensure that the application process cannot access sensitive files outside its designated directories. 4. Monitor logs for suspicious requests targeting the vulnerable endpoint, especially those containing traversal sequences, and respond promptly to potential exploitation attempts. 5. If feasible, isolate the affected system in a segmented network zone to reduce the blast radius of a potential breach. 6. Engage with the vendor for updates or patches and track any future advisories. 7. Consider deploying runtime application self-protection (RASP) or intrusion detection systems (IDS) capable of detecting and blocking path traversal attacks. 8. As a longer-term measure, plan for an upgrade or replacement of the affected software with a version that addresses this vulnerability once available.

Description

A security flaw has been discovered in Tsinghua Unigroup Electronic Archives System 3.2.210802(62532). Affected by this vulnerability is the function Download of the file /Search/Subject/downLoad. Performing a manipulation of the argument path results in path traversal. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The primary impact of CVE-2026-2672 is unauthorized disclosure of sensitive information stored on servers running the affected version of the Tsinghua Unigroup Electronic Archives System. Attackers exploiting this path traversal can access arbitrary files, potentially including confidential documents, user data, system configuration files, or credentials. This can lead to data breaches, loss of privacy, and potential further compromise if sensitive credentials or keys are exposed. Although the vulnerability does not directly affect system integrity or availability, the exposure of critical information can facilitate subsequent attacks such as privilege escalation or lateral movement within a network. Organizations relying on this electronic archives system, especially those handling sensitive or regulated data, face reputational damage, compliance violations, and operational risks. The availability of public exploit code increases the risk of opportunistic attacks, especially in environments with internet-facing instances of the affected software. The lack of vendor patching prolongs exposure and complicates remediation efforts.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 28 Feb 2026, 13:38 UTC

Technical details

References

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