CVE-2026-51937Public exploitNetwork attack vector

WeChat token disclosure via unauthenticated signing endpoint

Published Jul 7, 2026 · Updated Jul 7, 2026

Missing authentication in OneBlog 2.3.9 allows remote attackers to obtain WeChat Official Account access tokens through a public API. RestApiController.jssdkGetSignature reads configured AppID and AppSecret, obtains an access_token and jsapi_ticket, and returns both without authenticating the caller. Exposure requires configured WeChat credentials; the leaked two-hour tokens permit calls to Official Account APIs, including reading follower data and altering account content.

CVSS severity7.5
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in OneBlog 2.3.9 allows remote attackers to obtain WeChat Official Account access tokens through a public API. RestApiController.jssdkGetSignature reads configured AppID and AppSecret, obtains an access_token and jsapi_ticket, and returns both without authenticating the caller. Exposure requires configured WeChat credentials; the leaked two-hour tokens permit calls to Official Account APIs, including reading follower data and altering account content.

The record

CVE
CVE-2026-51937
Published
Jul 7, 2026
Updated
Jul 7, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1528
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1528Steal Application Access Token

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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