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CVE Record

CVE-2018-25056: yolapi metadata.py render_description cross site scripting

A vulnerability, which was classified as problematic, was found in yolapi. Affected is the function render_description of the file yolapi/pypi/metadata.py. The manipulation of the argument text leads to cross site scripting. It is possible to launch the attack remotely. The name of the patch is a0fe129055a99f429133a5c40cb13b44611ff796. It is recommended to apply a patch to fix this issue. VDB-216966 is the identifier assigned to this vulnerability.

LowCVSS 3.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2018-25056 is a low-severity cross-site scripting issue in yolapi. If yolapi renders untrusted description text, a low-privileged remote attacker could influence displayed page content when a user interacts with it. The cited sources show integrity impact only, not data theft or service outage.

Executive priority

Treat this as routine remediation if yolapi is present, with higher priority for public-facing or multi-user systems rendering untrusted package metadata. Evidence does not support emergency action.

Technical view

The flaw is CWE-79 in yolapi/pypi/metadata.py, function render_description. Manipulating the text argument can cause cross-site scripting. CVSS v3.1 is 3.5: network reachable, low complexity, low privileges required, user interaction required, unchanged scope, low integrity impact only. A patch is identified as commit a0fe129055a99f429133a5c40cb13b44611ff796.

Likely exposure

Exposure appears limited to environments using yolapi or forked code that calls render_description on untrusted package metadata. The public bundle does not provide affected version ranges, package distribution details, or deployment prevalence.

Exploitation context

The bundle says remote attack is possible, but KEV is false and no cited source claims active exploitation. The CVSS vector indicates an attacker needs low privileges and user interaction, reducing urgency compared with unauthenticated or zero-click XSS.

Researcher notes

Key gaps are affected version ranges and exploit-in-the-wild evidence. Validation should focus on whether render_description receives attacker-controlled text and whether the patch changed output handling sufficiently to prevent script execution.

Mitigation direction

  • Check whether yolapi is deployed or vendored in your environment.
  • Apply the upstream patch commit a0fe129055a99f429133a5c40cb13b44611ff796 where applicable.
  • Review vendor or project guidance for affected versions and release availability.
  • Avoid rendering untrusted metadata descriptions without output encoding or sanitization.

Validation and detection

  • Search dependency inventories and source repositories for yolapi usage.
  • Review forks or vendored copies for yolapi/pypi/metadata.py render_description.
  • Confirm the patch commit or equivalent sanitization is present.
  • Test affected rendering paths with benign XSS validation strings in a safe environment.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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.

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cve · low confidence lookup

CVE-2018-25056 mapping review

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Vulnerability profileCVE Program record
Severity
Low
CVSS
3.5 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
3.5CVSS 3.1LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N2.11.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

3.5Low
CVSS 3.1 vector shape for CVE-2018-25056Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/ayolapin/aListed
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-79 · source CWE mapping

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.

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