CVE-2022-1650Network attack vector

Credential disclosure via cross-origin redirect header forwarding

Published May 12, 2022 · Updated Aug 3, 2024

Information exposure in eventsource before 1.1.1 and 2.0.0 through 2.0.1 allows remote attackers to steal credentials via redirects. The redirect handler in lib/eventsource.js forwards caller-supplied Cookie and Authorization headers after following a Location to a different origin. Applications are exposed only when they connect with sensitive headers to an endpoint that redirects across origins, disclosing those credentials to the redirect target.

CVSS severity9.3
Critical
EPSS probability1.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in eventsource before 1.1.1 and 2.0.0 through 2.0.1 allows remote attackers to steal credentials via redirects. The redirect handler in lib/eventsource.js forwards caller-supplied Cookie and Authorization headers after following a Location to a different origin. Applications are exposed only when they connect with sensitive headers to an endpoint that redirects across origins, disclosing those credentials to the redirect target.

The record

CVE
CVE-2022-1650
Published
May 12, 2022
Updated
Aug 3, 2024
Vendor
EventSource
Product
eventsource
Classifications
CWE-212, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=v1.1.0
  2. Affected versionversion=unspecified <v2.0.2
  3. Affected versionversion=v2.0.0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EventSource · eventsourceversion=unspecified <=v1.1.0; version=unspecified <v2.0.2; version=v2.0.0 <unspecified

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
8.1huntr.devCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
9.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-212Improper Removal of Sensitive Information Before Storage or Transfer
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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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