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Medium severity6.1NVD Advisory· Published Jul 2, 2021· Updated Jun 17, 2026

CVE-2021-34807

CVE-2021-34807

Description

An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

43
  • Zimbra/Collaboration40 versions
    cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*+ 39 more
    • cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*range: <8.8.15
    • cpe:2.3:a:zimbra:collaboration:8.8.15:-:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p10:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p11:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p12:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p13:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p14:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p15:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p16:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p17:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p18:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p19:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p1:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p20:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p21:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p22:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p2:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p3:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p4:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p5:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p6:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p7:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p8:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:8.8.15:p9:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:-:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p10:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p11:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p12:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p13:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p14:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p15:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p1:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p2:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p3:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p4:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p5:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p6:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p7:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p8:*:*:*:*:*:*
    • cpe:2.3:a:zimbra:collaboration:9.0.0:p9:*:*:*:*:*:*
  • Zimbra/Zimbra Collaboration Suitedescription
  • Zimbra/Zimbrallm-fuzzy
    Range: <=9.0.0
  • Zimbra/Zimbra Collaboration (ZCS)llm-fuzzy
    Range: <=9.0.0

Patches

Vulnerability mechanics

References

4

News mentions

0

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