Trauma survivors who suffer from posttraumatic stress disorder (PTSD) symptoms may be particularly vulnerable when facing the COVID-19 pandemic. Yet trauma exposure may also lead to salutogenic outcomes, known as posttraumatic growth (PTG). Nevertheless, the implications of PTG attributed to prior trauma, for trauma survivors' adjustment when facing additional stressors, are unclear. Addressing this gap, 528 Israeli trauma survivors were assessed for PTG and PTSD symptoms attributed to prior trauma, as well as peritraumatic stress symptoms related to the pandemic, as part of an online survey. Analyses revealed that being younger, female, quarantined, negatively self-rating one's health status, and suffering from PTSD symptoms were associated with elevated peritraumatic stress symptoms. Furthermore, PTG attributed to prior trauma made a significant contribution in explaining elevated intrusion, avoidance, and hyperarousal symptoms. The present results point to the need for clinicians to take into account reports of PTG attributed to prior trauma when treating trauma survivors during the current pandemic.