Security readout for executives and security teams
Plain-English summary
CVE-2021-34181 is a cross-site scripting issue in TomExam 3.0. An attacker could abuse the p_name parameter on list.thtml to run script in a user’s browser if the user follows a crafted link or visits attacker-controlled content. The expected impact is account-context data exposure or page manipulation, not direct server compromise.
Executive priority
Treat this as a moderate web-application risk. It is unlikely to justify emergency response by itself, but public-facing TomExam 3.0 should be reviewed promptly because XSS can support session abuse, phishing inside trusted pages, and reputational harm.
Technical view
The CVE describes CWE-79 XSS in TomExam 3.0 through p_name passed to list.thtml. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, and no availability impact. The source bundle does not identify affected CPEs, vendor advisories, patches, or fixed versions.
Likely exposure
Exposure is most likely where TomExam 3.0 is deployed and list.thtml is reachable by users or externally accessible. The CVE metadata lists affected vendor and product as n/a, so asset teams should confirm exposure through software inventory rather than relying only on CPE matching.
Exploitation context
The bundle provides no evidence of active exploitation, and the CVE is not marked in CISA KEV. Exploitation requires user interaction. Public technical reference exists, but the provided evidence does not establish real-world exploitation, available weaponization, or a vendor-confirmed patch path.
Researcher notes
Key gaps are affected CPEs, vendor identity, patch status, and exploit evidence. The strongest source facts are TomExam 3.0, p_name, list.thtml, CWE-79, CVSS 6.1, and KEV false. Avoid overstating impact beyond browser-context script execution requiring user interaction.
Mitigation direction
- Identify any TomExam 3.0 deployments and prioritize reachable instances.
- Check TomExam maintainer guidance for fixed versions or official mitigations.
- Restrict access to TomExam interfaces until exposure is confirmed.
- Ensure p_name output is safely encoded and sanitized.
- Add browser-side hardening such as CSP where compatible.
Validation and detection
- Inventory applications for TomExam and confirm any version 3.0 use.
- Check whether list.thtml is reachable from untrusted networks.
- Review logs for unusual requests involving the p_name parameter.
- Use approved XSS testing to confirm p_name output encoding.
- Verify remediation against unit, regression, and browser tests.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-34181 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cnblogs.com/mrhonest/p/16949304.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.